Runningeagle v. Schriro , 825 F.3d 970 ( 2016 )


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  •                 FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    SEAN BERNARD RUNNINGEAGLE,                No. 07-99026
    Petitioner-Appellant,
    D.C. No.
    v.                     CV-98-01903-PGR
    CHARLES L. RYAN, Director,
    Arizona Department of                      OPINION
    Corrections,
    Respondent-Appellee.
    Appeal from the United States District Court
    for the District of Arizona
    Paul G. Rosenblatt, Senior District Judge, Presiding
    Argued and Submitted February 10, 2016
    Pasadena, California
    Filed June 10, 2016
    Before: Harry Pregerson, Kim McLane Wardlaw,
    and Carlos T. Bea, Circuit Judges.
    Opinion by Judge Wardlaw
    2                   RUNNINGEAGLE V. RYAN
    SUMMARY*
    Habeas Corpus / Death Penalty
    The panel affirmed the district court’s denial, on limited
    remand, of claims of ineffective assistance of counsel brought
    in a habeas corpus petition in a capital case.
    The district court originally denied the ineffective
    assistance claims as procedurally barred. On appeal, the
    panel affirmed the district court’s denial of the habeas
    petition but stayed the court of appeals’ mandate and ordered
    a limited remand to allow the district court to reconsider its
    prior rulings in light of Martinez v. Ryan, 
    132 S. Ct. 1309
    (2012), which announced a new equitable rule allowing a
    petitioner to show cause for the procedural default of certain
    ineffective assistance claims. On limited remand, the district
    court concluded that the petitioner did not show cause under
    Martinez, and thus did not excuse the procedural default.
    To show cause under Martinez, a petitioner must
    demonstrate that the state system in which he initially brought
    his ineffective assistance claims required that they be raised
    in initial-review collateral proceedings, and did not permit the
    petitioner to raise them on direct appeal. He must also show
    that the attorney who represented him in post-conviction
    review proceedings performed deficiently and thereby
    prejudiced his case under the standards of Strickland v.
    Washington.
    *
    This summary constitutes no part of the opinion of the court. It has
    been prepared by court staff for the convenience of the reader.
    RUNNINGEAGLE V. RYAN                       3
    The panel held that the district court erred in concluding
    that Martinez was inapplicable because, at the time of the
    petitioner’s direct appeal, Arizona allowed defendants to
    bring ineffective assistance claims on direct appeal. The
    panel concluded that in fact, during the relevant period,
    Arizona did require petitioners to bring ineffective assistance
    claims in initial-review collateral proceedings, not expressly,
    but by virtue of the operation of its procedural system.
    Nonetheless, the petitioner failed to show that his post-
    conviction review counsel performed deficiently and to his
    prejudice.
    The panel affirmed the district court’s judgment and
    order, and its continued denial of the habeas petition. The
    panel lifted the stay of the mandate and ordered that it would
    issue in the regular course.
    COUNSEL
    Jennifer Y. Garcia (argued), Assistant Federal Public
    Defender; Jon M. Sands, Federal Public Defender; Arizona
    Federal Public Defender’s Office, Phoenix, Arizona, for
    Petitioner-Appellant.
    Jon G. Anderson (argued), Assistant Attorney General,
    Capital Litigation Section; Lacey Stover Gard, Chief
    Counsel; Mark Brnovich, Attorney General; Arizona
    Attorney General’s Office, Phoenix, Arizona, for
    Respondent-Appellee.
    4                 RUNNINGEAGLE V. RYAN
    OPINION
    WARDLAW, Circuit Judge:
    In 1988, petitioner Sean Bernard Runningeagle was
    convicted of two counts of first degree murder in Arizona
    state court. He was sentenced to death in 1989, and the
    Arizona Supreme Court affirmed his conviction, sentence,
    and the denial of his state petition for post-conviction relief.
    State v. Runningeagle (Runningeagle I), 
    859 P.2d 169
     (Ariz.
    1993). Runningeagle then petitioned for a federal writ of
    habeas corpus, which the district court denied. In 2012, while
    Runningeagle’s appeal of that decision was pending before
    us, the Supreme Court decided Martinez v. Ryan, 
    132 S. Ct. 1309
     (2012). Martinez announced a new equitable rule that
    allows a petitioner to show cause for the procedural default of
    certain ineffective assistance of counsel (“IAC”) claims. We
    affirmed the district court’s denial of Runningeagle’s petition,
    but also stayed the mandate and ordered a limited remand to
    allow the district court to reconsider its prior rulings that
    several of Runningeagle’s IAC claims were procedurally
    defaulted in light of Martinez. Runningeagle v. Ryan
    (Runningeagle II), 
    686 F.3d 758
     (9th Cir. 2012). On remand,
    the district court concluded that Runningeagle did not show
    cause under Martinez, and thus did not excuse the procedural
    default of the IAC claims. Runningeagle appeals.
    To show cause under Martinez, a petitioner must
    demonstrate, inter alia, that the state system in which he
    initially brought his IAC claims required that they be raised
    in initial-review collateral proceedings, and did not permit the
    petitioner to raise them on direct appeal. He must also show
    that the attorney who represented him in post-conviction
    review (“PCR”) proceedings performed deficiently and
    RUNNINGEAGLE V. RYAN                         5
    thereby prejudiced his case under the standards of Strickland
    v. Washington, 
    466 U.S. 668
     (1984).
    We hold that the district court erred in concluding that
    Martinez was inapplicable because, at the time of
    Runningeagle’s direct appeal, Arizona allowed defendants to
    bring IAC claims on direct appeal. To the contrary: during
    the relevant period, Arizona actually did require petitioners
    to bring IAC claims in initial-review collateral proceedings,
    not expressly, but by virtue of the operation of its procedural
    system. See Trevino v. Thaler, 
    133 S. Ct. 1911
    , 1915 (2013).
    The proceedings in this very case demonstrate the operation
    of Arizona’s requirement. However, Runningeagle fails to
    show that his PCR counsel performed deficiently and to his
    prejudice. His IAC claims therefore remain in procedural
    default, and do not serve as a basis for federal habeas relief.
    We affirm the district court’s denial of the petition.
    I. Factual Background
    We again1 take the facts as recited by the Arizona
    Supreme Court in its 1993 opinion:
    In the early morning of December 6, 1987,
    Runningeagle, [his cousin Corey] Tilden, and
    their two friends Orva and Milford Antone,
    were driving around Phoenix. Runningeagle
    wanted parts for his car, so the foursome
    stopped at the Davis house, which had a car
    parked outside. Runningeagle, Tilden and
    Orva got out of the car, while Milford
    1
    Runningeagle II, 686 F.3d at 763–64 (quoting Runningeagle I,
    
    859 P.2d at
    171–72); see also 
    id.
     at 763 n.1.
    6             RUNNINGEAGLE V. RYAN
    remained passed out drunk in the back seat.
    Runningeagle used his large hunting knife to
    remove two carburetors from the Davis car.
    Orva put them and an air scoop in the trunk of
    Runningeagle’s car. Tilden and Runningeagle
    also stole a floor jack and tool box. Orva took
    a bicycle from the open garage.
    Herbert and Jacqueline Williams, an elderly
    couple, lived next door to the Davises. Mr.
    Williams came out of his house and told the
    young men to leave or he would call the
    police.    Orva returned to the car, but
    Runningeagle and Tilden approached Mr.
    Williams. Runningeagle concealed his knife
    by his side. Tilden carried a large, black
    flashlight. Runningeagle then began to tease
    and scare Mr. Williams with the knife. Mr.
    Williams retreated and told Runningeagle to
    put the knife away. Mrs. Williams then came
    out of the house and yelled at them. Tilden
    confronted Mrs. Williams, argued with her,
    and then hit her on the side of the head with
    the flashlight. Mr. Williams told them to
    leave his wife alone, and helped her back into
    the house. Runningeagle broke through the
    Williams’ door with a tire iron, and he and
    Tilden barged in.
    The noise awakened a neighbor, who heard
    Mrs. Williams crying and the words “bring
    him in” spoken by a tall, young man he saw
    standing in the Williams carport. The
    neighbor called “911,” but by the time the
    RUNNINGEAGLE V. RYAN                     7
    police arrived, Mr. and Mrs. Williams were
    dead. Mr. Williams suffered several head
    injuries and five stab wounds, three of which
    were fatal. Mrs. Williams also suffered
    several head injuries, one of which fractured
    her skull and was possibly fatal, in addition to
    four stab wounds, three of which were fatal.
    The police searched the Williams home. The
    drawer in which Mrs. Williams stored her
    jewelry was open and some jewelry was
    missing. They found an empty purse, blood
    drops and two bloody shoe print patterns.
    They discovered Runningeagle’s palm print
    on the clothes dryer next to the bodies.
    Runningeagle discussed the crimes on several
    occasions before his arrest. He told his
    girlfriend that he had been in a fight with two
    people and had hit them “full-force.” He
    showed her his car trunk full of the stolen
    property. He showed the hood scoop and
    carburetors to another friend. Tilden, too,
    spoke about the crimes and informed
    Runningeagle that an account of the burglary
    was on the radio and that “they got there an
    hour after we left.”
    When the defendants were arrested, the police
    found, among other things, the Davis air
    scoop with Runningeagle’s prints on it, two
    carburetors, the tool box, Mrs. Williams’
    wallet and college pin, a large black flashlight
    with Tilden’s prints on it, and the Davis
    8                RUNNINGEAGLE V. RYAN
    bicycle with Runningeagle’s prints on the
    wheel rim. A Phoenix Police Department
    criminalist matched Runningeagle’s shoes
    with the bloody shoe prints found at the
    Williams house, and also found that an inked
    print of Tilden’s shoes made a pattern similar
    to other shoe prints at the house.
    Runningeagle, Tilden, and Orva Antone were
    indicted on two counts of first degree murder,
    and one count each of first degree burglary of
    a residence, second degree burglary of a
    residence, third degree burglary of a car, theft
    of property valued between $500 and $1000,
    and theft of property valued between $250
    and $500. Orva Antone pleaded guilty to
    burglary and testified for the state at the joint
    trial.
    After a five-week trial, Runningeagle and
    Tilden were convicted on July 27, 1988.
    Runningeagle was found guilty of two counts
    of first degree murder, two counts of theft,
    and one count each of first degree burglary,
    second degree burglary, and third degree
    burglary. Tilden was convicted of the same
    charges except for third degree burglary.
    Runningeagle I, 
    859 P.2d at
    171–72.
    RUNNINGEAGLE V. RYAN                               9
    II. Procedural Background
    A. Sentencing and Special Verdict
    Baltazar Iniguez was appointed to represent Runningeagle
    at trial and sentencing. Iniguez gathered a total of 15 letters
    from Runningeagle’s family members and acquaintances,
    which he submitted as mitigation evidence. Iniguez also
    presented the direct testimony of several witnesses on
    Runningeagle’s behalf at evidentiary hearings, and he
    examined or cross-examined several of Tilden’s witnesses,
    who were Runningeagle’s family members or acquaintances,
    at these hearings.2
    Arizona probation officers prepared two presentence
    reports (“PSRs”) concerning Runningeagle, which contained
    information about his family and social background, criminal
    history, health, and use of alcohol and illicit substances.
    These reports quoted Iniguez, who vouched for
    Runningeagle’s good character, stated that the murders were
    fueled by alcohol, and recommended leniency. It does not
    appear from the record that Iniguez gathered outside
    information for the probation officers or disputed the
    accuracy of the PSRs.
    Iniguez successfully petitioned the court under Arizona
    Rule of Criminal Procedure 26.5 for two mental health
    2
    At the first of these hearings, Runningeagle sought the appointment of
    new counsel, and stated that Iniguez was “ineffective and inefficient.”
    Iniguez moved to withdraw, citing the “barrier” between himself and his
    client, and Runningeagle’s lack of cooperation. The court denied these
    requests, and stated that Runningeagle would “have an opportunity to raise
    all of these allegations by way of Petition for Post-Conviction Relief.”
    10                   RUNNINGEAGLE V. RYAN
    examinations of Runningeagle. These examinations were
    conducted by Doctors M.B. Bayless and Francis A. Enos. Dr.
    Bayless diagnosed Runningeagle with antisocial personality
    disorder, and Dr. Enos found that his behavioral pattern was
    “sociopathic rather than neurotic or psychotic.” Because
    Iniguez had requested these examinations under Rule
    26.5—against the advice of Tilden’s attorney, Roland J.
    Steinle III, who had recommended requesting court funds for
    private examinations3—Iniguez’s attempts to exclude Dr.
    Bayless’s and Dr. Enos’s reports were unsuccessful, and he
    was required to file them with the court.
    Before the final sentencing hearing, Iniguez submitted an
    eight-page sentencing memorandum. Iniguez argued that
    Runningeagle should be spared the death penalty, and should
    instead receive two concurrent life sentences. Iniguez
    contended that Runningeagle’s mind was impaired by
    alcoholic “jungle juice” at the time of the murders; there was
    insufficient evidence that Runningeagle, rather than Tilden,
    committed the murders; and the murders were out of
    character. Iniguez also sought to rebut the anticipated
    aggravating factors relied upon by the state. He argued the
    killings were not “cruel, heinous and depraved,” there was no
    evidence of an expectation of pecuniary gain, and they should
    not be considered two separate killings because both occurred
    3
    Arizona Rule of Criminal Procedure 26.5 provided, “At any time
    before sentence is pronounced, the court may order the defendant to
    undergo mental health examination or diagnostic evaluation. Reports
    under this section shall be due at the same time as the pre-sentence report
    unless the court orders otherwise.” According to Steinle, Arizona courts
    construed this rule to generally require disclosure of reports for use at
    sentencing. Thus, if a Rule 26.5 report contained negative information,
    there was no way to prevent the sentencing judge from considering that
    information.
    RUNNINGEAGLE V. RYAN                            11
    within a “very short period of time,” that is, that each murder
    was committed during the commission of the other. Finally,
    Iniguez claimed three mitigating factors were present:
    Runningeagle was young, intoxicated, and “under unusual or
    substantial duress.” Iniguez did not present new evidence in
    support of the memorandum, and relied instead on the PSRs
    and trial testimony and evidence.
    Runningeagle and Tilden were jointly sentenced at a
    February 3, 1989 hearing. The court issued a special verdict,
    from which it read at the hearing, sentencing Runningeagle to
    death and Tilden to two consecutive terms of life
    imprisonment. In imposing Runningeagle’s sentence, the
    court found that the state had proved three statutory
    aggravating circumstances: that the murders were committed
    with the expectation of pecuniary gain; that they were
    “especially cruel, heinous and depraved”; and that
    Runningeagle was convicted of one or more homicides during
    the commission of the offense. See 
    Ariz. Rev. Stat. § 13
    -
    703(F)(5), (6), (8) (1988). Upon considering the evidence
    submitted by Iniguez, the court found that the only mitigating
    circumstance for the murder counts was Runningeagle’s age,
    “one day short of 19,” which was not sufficient to call for
    leniency.4 The court found that the testimony and letters from
    Runningeagle’s family and friends did not compel mitigation.
    The court stated that Runningeagle had not shown any feeling
    for family or friends, that he was concerned only with
    “himself and his own appetites,” and that the psychological
    reports indicated that he did not “have the types of feelings or
    emotions that people usually have for family or friends.”
    4
    The court found that Runningeagle’s burglary and theft counts, but not
    the murder counts, were mitigated by a “[h]istory of family problems
    although not overly severe.”
    12                RUNNINGEAGLE V. RYAN
    Although the court quoted at length from the Bayless and
    Enos reports at the sentencing hearing, and also considered a
    psychological report prepared by Doctor Roger M. Martig for
    prior Juvenile Court proceedings, the court stated that it did
    not consider these as aggravating circumstances, but neither
    did it find that they weighed in favor of mitigation.
    In sparing Tilden death, the court found “significant and
    considerable differences” between him and Runningeagle.
    The court found that the state had not proved beyond a
    reasonable doubt that Tilden participated in the murders with
    the expectation of pecuniary gain, though the other two
    aggravating factors were present. The court noted that Tilden
    had a difficult childhood, but it did not expressly give weight
    to this circumstance. It found that psychological evidence
    that Tilden suffered from a personality disorder was not, in
    itself, a mitigating circumstance. The court found highly
    significant the great weight of the evidence suggesting that
    Runningeagle, and not Tilden, had personally inflicted the
    fatal stab wounds. The court concluded that Tilden had
    followed his charismatic, older, more intelligent cousin on the
    night of the murders, and that Tilden, unlike Runningeagle,
    had a conscience and was capable of rehabilitation. The court
    stated, however, that “these comparisons were not used in
    aggravation of defendant Runningeagle’s sentence.”
    B. PCR and Appellate Proceedings
    Following sentencing, Runningeagle commenced PCR
    proceedings pro se by filing a form petition for post-
    conviction relief and a petition for writ of coram nobis. The
    coram nobis petition alleged that Iniguez had failed to
    perform an adequate investigation, mount an effective
    defense, or object to inadmissible evidence and prosecutorial
    RUNNINGEAGLE V. RYAN                          13
    misconduct. On March 23, 1990, John M. Antieau was
    appointed to represent Runningeagle in the PCR and appellate
    proceedings.5     The Arizona Supreme Court stayed
    Runningeagle’s direct appeal pending determination of his
    PCR petition. The same judge who had presided over trial
    and sentencing also presided over the initial PCR
    proceedings.
    Over the government’s objection, the PCR court granted
    Antieau’s motion for the appointment of an investigator,
    Mary Durand, and a mental health expert, Doctor Otto
    Bendheim. Antieau filed a supplemental petition challenging
    Runningeagle’s sentence on eleven grounds, including two
    IAC claims for failure to move to sever Runningeagle’s trial
    from Tilden’s, and for a deficient closing argument. Antieau
    also filed a second supplemental petition in which he
    challenged Dr. Bayless’s and Dr. Enos’s diagnoses of
    antisocial personality disorder, and requested $1500 in
    additional funds so a new doctor, Bendheim, could interview
    Runningeagle in prison.
    On April 23, 1991, the PCR court summarily dismissed
    Runningeagle’s petitions. It found that, in his initial pro se
    petition, Runningeagle had not raised a “‘colorable claim’ . . .
    of ineffective assistance of trial counsel,” and that even if his
    complaints were valid, the evidence against him was
    overwhelming, and the result would not have been different.
    The court found that the claims raised in the supplemental
    petitions filed by Antieau were “still raisable on direct
    appeal.” It denied the request for additional funding for Dr.
    Bendheim to prepare a report, which the court viewed as “not
    5
    Antieau was appointed after Runningeagle successfully sought the
    removal of another appointed PCR and appellate counsel.
    14                RUNNINGEAGLE V. RYAN
    appropriate in the context of post-conviction relief
    proceedings.” In addressing this issue, the court opined that
    Runningeagle appeared to “take[]one aspect of the Court’s
    sentencing as if it were the only basis for the Court’s
    determination of the appropriate and lawful sentence.” The
    court denied a motion for rehearing filed by Antieau.
    Antieau petitioned the Arizona Supreme Court for review
    of the PCR court’s denial of relief. This petition was
    consolidated with Runningeagle’s direct appeal, which was
    also filed by Antieau. On April 20, 1993, the Arizona
    Supreme Court affirmed Runningeagle’s conviction and
    sentence and the denial of his PCR petition. It reasoned that,
    “[b]ecause Runningeagle failed to show that counsel’s
    conduct was deficient, the trial court properly dismissed his
    petition for post-conviction relief.”
    C. Subsequent Proceedings
    After the United States Supreme Court denied certiorari
    and the Arizona Supreme Court issued its mandate,
    Runningeagle initiated pro se a second PCR proceeding,
    which was ultimately dismissed because he failed to timely
    file a petition. Runningeagle next filed a federal habeas
    petition, which was dismissed without prejudice to allow him
    to exhaust additional claims in state court.
    Runningeagle then initiated a third PCR proceeding in the
    Arizona Superior Court: this was the state proceeding in
    which the claims raised on this appeal were found
    procedurally defaulted. In a 224-page petition filed by a new
    attorney, Runningeagle claimed, inter alia, that Iniguez had
    performed deficiently by failing to (i) investigate and present
    key mitigation evidence; (ii) obtain a competent and
    RUNNINGEAGLE V. RYAN                            15
    independent mental status examination; (iii) develop and
    advance a theory that Tilden actually committed the
    homicides; and (iv) request the appointment of a second
    attorney. On October 21, 1996, the Superior Court dismissed
    Runningeagle’s claims and the petition. It held that, even if
    the mitigation-evidence claims were “colorable,” they were
    procedurally defaulted under Arizona Rule of Criminal
    Procedure 32.2(a)(3), and the inculpation and second-counsel
    claims were in default and, alternatively, not colorable.6 The
    Arizona Supreme Court denied Runningeagle’s petition for
    review of these rulings.
    On April 15, 1999, Runningeagle filed the amended
    federal habeas petition now before us. He raised, among
    others, claims that Iniguez was ineffective because he failed
    to retain, use, and competently prepare independent mental
    health experts, or investigate and present mitigating evidence
    at sentencing (“mitigation-evidence IAC claim”), inculpate
    Tilden (“inculpation IAC claim”), and request a second
    counsel (“second-counsel IAC claim”). On February 6, 2004
    6
    Runningeagle also claimed that Antieau was constitutionally
    ineffective on appeal and in PCR proceedings. The Arizona Superior
    Court found this claim precluded, and alternatively dismissed it on the
    merits. We reject, however, the government’s suggestion that this
    alternative merits ruling is entitled to AEDPA deference. Runningeagle
    does not on this appeal seek to relitigate a “claim” regarding PCR
    counsel’s performance on which basis his habeas petition could be
    “granted” (nor could he under current Supreme Court precedent). See
    
    28 U.S.C. § 2254
    (d); Harrington v. Richter, 
    562 U.S. 86
    , 98 (2011).
    Rather, he seeks to show cause for the procedural default of underlying
    trial-level IAC claims on the basis of PCR counsel’s allegedly deficient
    performance. The Superior Court’s ruling cannot possibly be construed
    to address this issue, as the equitable rule of Martinez had not yet been
    announced in 1996.
    16                   RUNNINGEAGLE V. RYAN
    and March 10, 2006, the district court issued interim orders
    finding each of these claims procedurally defaulted.
    The district court denied Runningeagle’s remaining
    claims on the merits, and we granted his request for a
    certificate of appealability as to several of these claims. The
    Supreme Court decided Martinez on March 20, 2012. On
    July 18, 2012, we filed our opinion affirming the district
    court’s rulings on the merits of the claims presented on
    appeal. Also on July 18, 2012, we granted Runningeagle’s
    motion for remand to the district court “for the limited
    purpose of reconsidering its procedural default holdings on
    Runningeagle’s ineffective assistance of counsel claims . . .
    in light of Martinez v. Ryan.”7 On limited remand, the district
    court expanded the record and denied Runningeagle’s request
    for a further evidentiary hearing. On October 2, 2014, the
    district court entered an order holding that Runningeagle had
    not shown cause under Martinez for the procedural default of
    the mitigation-evidence, inculpation, and second-counsel IAC
    claims, leaving them in default.
    III. Standard of Review
    We review de novo the district court’s dismissal of a
    habeas petition and its procedural default determinations.
    Sexton v. Cozner, 
    679 F.3d 1150
    , 1153 (9th Cir. 2012).
    Runningeagle filed his amended federal petition after the
    7
    By granting this motion, we rejected the government’s argument that
    Runningeagle had abandoned any request for relief based on ineffective
    assistance of PCR counsel. We similarly reject the government’s
    suggestion that we reconsider this ruling. Cf. Ball v. Rodgers, 
    492 F.3d 1094
    , 1102 (9th Cir. 2007) (discussing the “exception to the waiver rule
    . . . for intervening changes in the law”) (ellipsis in original) (citation
    omitted); 9th Cir. R. 27-10(a)(3).
    RUNNINGEAGLE V. RYAN                            17
    effective date of the Antiterrorism and Effective Dealth
    Penalty Act of 1996 (AEDPA). Runningeagle II, 686 F.3d at
    766. Therefore, any claim that was adjudicated on the merits
    in state court is reviewed under the “highly deferential
    standards” of AEDPA. Davis v. Ayala, 
    135 S. Ct. 2187
    , 2198
    (2015); see 
    28 U.S.C. § 2254
    (d). Any federally reviewable
    claim that was not adjudicated on the merits in state court is
    reviewed de novo. See Cone v. Bell, 
    556 U.S. 449
    , 472
    (2009).
    IV. Discussion
    A. The Legal Framework of Martinez.
    Federal courts generally cannot grant habeas relief for a
    claim defaulted in state court “pursuant to an independent and
    adequate state procedural rule . . . unless the prisoner can
    demonstrate cause for the default and actual prejudice as a
    result of the alleged violation of federal law.” Coleman v.
    Thompson, 
    501 U.S. 722
    , 750 (1991).8 The constitutionally
    ineffective performance of counsel, which is “imputed to the
    State,” may provide cause, but there is no general
    constitutional right to an attorney in PCR proceedings. 
    Id.
     at
    752–54. The Supreme Court in Coleman left unanswered the
    question of whether and under what circumstances there may
    be a constitutional right to counsel where “state collateral
    review is the first place a prisoner can present a challenge to
    his conviction.” 
    Id. at 755
    .
    8
    Procedural default may also be excused where “failure to consider the
    claim[] will result in a fundamental miscarriage of justice.” Coleman,
    
    501 U.S. at 750
    . Runningeagle does not argue that this exception applies.
    18                RUNNINGEAGLE V. RYAN
    Without answering that question, the Martinez Court held
    that cause may be established for a prisoner’s procedural
    default of a claim of ineffective assistance at trial by
    “[i]nadequate assistance of counsel at initial-review collateral
    proceedings,” i.e., “collateral proceedings which provide the
    first occasion to raise a claim of ineffective assistance of at
    trial.” 
    132 S. Ct. at 1315
    . Martinez stated that this “narrow
    exception” to Coleman was an “equitable” one, necessary
    because:
    When an attorney errs in initial-review
    collateral proceedings, it is likely that no state
    court at any level will hear the prisoner’s
    claim. . . . And if counsel’s errors in an
    initial-review collateral proceeding do not
    establish cause to excuse the procedural
    default in a federal habeas proceeding, no
    court will review the prisoner’s claims.
    ....
    Without the help of an adequate attorney, a
    prisoner will have . . . difficulties vindicating
    a substantial ineffective-assistance-of-trial-
    counsel claim. Claims of ineffective
    assistance at trial often require investigative
    work and an understanding of trial strategy.
    When the issue cannot be raised on direct
    review, moreover, a prisoner asserting an
    ineffective-assistance-of-trial-counsel claim in
    an initial-review collateral proceeding cannot
    rely on a court opinion or the prior work of an
    attorney addressing that claim. To present a
    claim of ineffective assistance at trial in
    RUNNINGEAGLE V. RYAN                      19
    accordance with the State’s procedures, then,
    a prisoner likely needs an effective attorney.
    
    Id.
     at 1315–18 (citations omitted). In Trevino v. Thaler,
    
    133 S. Ct. 1911
     (2013), the Supreme Court summarized the
    four-part test announced in Martinez:
    Coleman [contains] an exception, allowing a
    federal habeas court to find “cause,” thereby
    excusing a defendant’s procedural default,
    where (1) the claim of “ineffective assistance
    of trial counsel” was a “substantial” claim;
    (2) the “cause” consisted of there being “no
    counsel” or only “ineffective” counsel during
    the state collateral review proceeding; (3) the
    state collateral review proceeding was the
    “initial” review proceeding in respect to
    the “ineffective-assistance-of-trial-counsel
    claim”; and (4) state law requires that an
    “ineffective assistance of trial counsel [claim]
    . . . be raised in an initial-review collateral
    proceeding.”
    
    Id. at 1918
     (second and third alterations in original) (citing
    Martinez, 
    132 S. Ct. at
    1318–19, 1320–21).
    The government does not dispute that the third Martinez
    requirement is satisfied: Runningeagle seeks to show cause
    based on Antieau’s supposedly deficient representation
    during his initial PCR proceeding. We address the remaining
    requirements in turn.
    20                RUNNINGEAGLE V. RYAN
    B. Arizona Law Required Prisoners to Raise IAC Claims in
    Initial-Review Collateral Proceedings During the
    Relevant Time Period.
    We consider at the outset what Arizona law required to
    assert an IAC claim at the time Runningeagle brought his
    appeal and first petition for post-conviction relief. This is an
    appropriate place to begin, because however deficient or
    prejudicial the performance of trial or PCR counsel, cause
    may be shown under Martinez only if, “under state law,
    claims of ineffective assistance of trial counsel must be raised
    in an initial-review collateral proceeding.” 
    132 S. Ct. at 1320
    . The Supreme Court explained in Trevino that this
    requirement could be satisfied where state law did not
    explicitly require petitioners to assert IAC claims in initial-
    review collateral proceedings, but “[t]he structure and design
    of the [state] system in actual operation . . . make it virtually
    impossible for an ineffective assistance claim to be presented
    on direct review.” 
    133 S. Ct. at 1915
     (citation omitted).
    The district court held that, at the time Runningeagle
    brought his appeal and first petition for post-conviction relief,
    Arizona law provided for direct appellate review of IAC
    claims. The district court found that Runningeagle, through
    Antieau, in fact raised IAC claims in the PCR proceeding,
    “and then consolidated those claims with the other issues
    raised on appeal.” It concluded that this consolidation
    procedure was the functional equivalent of “providing direct
    appellate review of ineffectiveness claims.” Accordingly, the
    district court held that the procedural default of
    Runningeagle’s claims could not be excused under Martinez.
    Arizona did not expressly require IAC claims to be raised
    in collateral proceedings until 2002, when the Arizona
    RUNNINGEAGLE V. RYAN                              21
    Supreme Court decided State v. Spreitz, 
    39 P.3d 525
     (Ariz.
    2002).9 Runningeagle filed his supplemental PCR petition
    and appeal in 1990 and 1991, respectively, before Spreitz
    became law. However, at this time, the “structure and
    design” of Arizona law as set forth by the Arizona Supreme
    Court made the meaningful presentation of an IAC claim on
    direct review “virtually impossible.” See Trevino, 
    133 S. Ct. at 1915
     (citation omitted).
    In State v. Valdez, 
    770 P.2d 313
     (Ariz. 1989), the Arizona
    Supreme Court strongly urged defendants to raise IAC claims
    in petitions brought under Arizona Rule of Criminal
    Procedure 32, which governs PCR proceedings. 
    Id. at 319
    .
    The Court stated that it was “reluctant” to decide IAC claims
    without the benefit of an evidentiary record that could not be
    developed in direct appellate proceedings. 
    Id. at 318
    . The
    Court set forth its recommended procedure: “[a]s a general
    matter,” a defendant who seeks to raise an IAC claim during
    the pendency of his direct appeal “should file the proper
    petition under Rule 32 . . . in the trial court and seek an order
    from the appellate court suspending the appeal.” 
    Id. at 319
    .
    The trial court could then make an evidentiary record and
    issue its ruling, and after that, the defendant could move for
    consolidation of the post-conviction proceedings and the
    direct appeal.10 
    Id.
     The Arizona court system followed the
    9
    Martinez, which was also brought by a petitioner in the custody of the
    State of Arizona, cited Spreitz for the proposition that “Arizona law . . .
    did not permit [Martinez’s appellate counsel] to argue on direct appeal that
    trial counsel was ineffective.” Martinez, 
    132 S. Ct. at 1314
    .
    10
    In Krone v. Hotham, 
    890 P.2d 1149
     (Ariz. 1995), which was decided
    after Runningeagle filed his first PCR petition and appeal, the Arizona
    Supreme Court retreated from the Valdez procedure of staying appeals
    pending the resolution of Rule 32 proceedings. Krone stated that this
    22                   RUNNINGEAGLE V. RYAN
    Valdez procedure when it decided Runningeagle’s claims:
    Antieau raised IAC claims in a Rule 32 proceeding, and the
    Arizona Supreme Court stayed his direct appeal pending that
    proceeding, and then consolidated them for appellate review.
    In State v. Carver, 
    771 P.2d 1382
     (Ariz. 1989), which was
    decided shortly after Valdez, the Arizona Supreme Court
    held: “We will not reverse a conviction on ineffective
    assistance of counsel grounds on direct appeal absent a
    separate evidentiary hearing concerning counsel’s actions or
    inactions. Only where we may clearly determine from the
    record that the ineffective assistance claim is meritless will
    we elect to consider the issue on direct appeal.” 
    Id. at 1390
    .11
    Valdez and Carver rendered it all but futile for an Arizona
    criminal defendant to raise an IAC claim on direct appeal.12
    At best, he would be required to raise it again by Rule 32
    petition. At worst, the claim would be deemed clearly
    meritless and denied without any further development of the
    record. As in Trevino, there is no principled reason why
    procedure had “proved unworkable and resulted in long delays,” and
    thereafter would be followed only in “the most exceptional
    circumstances.” 
    Id.
     at 1151–52.
    11
    Carver’s holding was reiterated in State v. Atwood, 
    832 P.2d 593
    , 616
    (Ariz. 1992), which was decided after Runningeagle brought his appeal
    and first petition for post-conviction relief, and before the Arizona
    Supreme Court affirmed Runningeagle’s conviction and sentence and the
    denial of his PCR petition.
    12
    We express no opinion as to whether, before Valdez and Carver were
    decided, Arizona law effectively required petitioners to bring IAC claims
    in initial-review collateral proceedings. Cf. Lambright v. Stewart,
    
    241 F.3d 1201
    , 1203 (9th Cir. 2001) (stating that, as of 1984, no Arizona
    case required IAC claims to be brought on direct appeal).
    RUNNINGEAGLE V. RYAN                      23
    federal law should “deny defendants the benefit of Martinez
    solely because of the existence of a theoretically available
    procedure, namely direct appellate review,” which is
    “difficult, and in the typical case all but impossible, to use
    successfully, and which [Arizona] courts so strongly
    discourage defendants from using.” 
    133 S. Ct. at 1920
    .
    The district court found that Trevino did not apply
    because the Valdez procedure of staying the direct appeal and
    consolidating it with the Rule 32 proceeding in effect
    provided “direct appellate review of ineffectiveness claims.”
    However, this consolidation was merely ministerial. Under
    Valdez, direct appeals and Rule 32 petitions remained on
    separate tracks, though they ultimately converged at the same
    station. Crucially, that convergence would occur after PCR
    counsel had raised the issues for review and developed the
    evidentiary record before the PCR court. The Arizona
    appellate court would concurrently review the direct appeal
    and the denial of the PCR petition, as it did in this case, but
    this is not the same as reviewing the petition in the first
    instance. See Runningeagle I, 
    859 P.2d at 171
    . Martinez
    makes clear that an appeal from an initial-review collateral
    proceeding is distinct from the initial-review collateral
    proceeding itself; the equitable excuse applies only to the
    latter. 
    132 S. Ct. at 1320
    .
    Consolidation did not alter the result that, by “structure
    and design,” the Arizona system in actual operation made it
    “‘virtually impossible’ for an ineffective assistance claim to
    be presented on direct review.” Trevino, 
    133 S. Ct. at 1915
    (citation omitted). The Arizona system therefore posed the
    grave risk with which Martinez is concerned: that PCR
    counsel would fail to raise or develop substantial trial-level
    IAC claims, and, because PCR counsel’s performance is not
    24                RUNNINGEAGLE V. RYAN
    constitutionally reviewable, any deficiency in this regard
    would result in “no court . . . review[ing] the prisoner’s
    claims.” Martinez, 
    132 S. Ct. at 1316
    . The equitable rules of
    Martinez and Trevino prevent this inequitable result.
    Thus, during the period Runningeagle was litigating his
    direct appeal and Rule 32 petition, Arizona law in effect
    required the assertion of IAC claims in the initial-review
    collateral proceeding. The district court erred in holding
    otherwise.
    C. Runningeagle Fails to Demonstrate the Prejudicial
    Default of a Substantial IAC Claim in PCR Proceedings.
    Where, as here, the state criminal justice system satisfies
    the characteristics required by Martinez, the petitioner must
    make two related showings about the strength of his
    particular IAC claim to excuse its default.
    First, the IAC claim must be “a substantial one, which is
    to say that the prisoner must demonstrate that the claim has
    some merit.” Martinez, 
    132 S. Ct. at 1318
    . Thus, there must
    be a substantial showing of a “reasonable probability that, but
    for counsel’s unprofessional errors, the result of the
    proceeding would have been different.” See Strickland v.
    Washington, 
    466 U.S. 668
    , 694 (1984). “A reasonable
    probability is a probability sufficient to undermine confidence
    in the outcome.” 
    Id.
     “When a defendant challenges a death
    sentence such as the one at issue in this case, the question is
    whether there is a reasonable probability that, absent the
    errors, the sentencer . . . would have concluded that the
    balance of aggravating and mitigating circumstances did not
    warrant death.” 
    Id. at 695
    .
    RUNNINGEAGLE V. RYAN                              25
    Second, a petitioner must show that “appointed counsel
    in the initial-review collateral proceeding, where the claim
    should have been raised, was ineffective under the standards
    of Strickland v. Washington.” Martinez, 
    132 S. Ct. at 1318
    .
    Construing Martinez, we have held that, to fulfill this
    requirement, a petitioner must show not only that PCR
    counsel performed deficiently, but also that this prejudiced
    the petitioner, i.e., that “there was a reasonable probability
    that, absent the deficient performance, the result of the post-
    conviction proceedings would have been different.” Pizzuto
    v. Ramirez, 
    783 F.3d 1171
    , 1178 (9th Cir. 2015) (quoting
    Clabourne v. Ryan, 
    745 F.3d 362
    , 367 (9th Cir.), proceedings
    suspended and mandate stayed (Apr. 2, 2014), and overruled
    on other grounds by McKinney v. Ryan, 
    813 F.3d 798
    , 818
    (9th Cir. 2015) (en banc)). Although the prejudice at issue is
    that in PCR proceedings, this is a recursive standard. It
    requires the reviewing court to assess trial counsel’s as well
    as PCR counsel’s performance. This is because, for us to find
    a reasonable probability that PCR counsel prejudiced a
    petitioner by failing to raise a trial-level IAC claim, we must
    also find a reasonable probability that the trial-level IAC
    claim would have succeeded had it been raised.13
    13
    Runningeagle criticizes the Clabourne and Pizzuto framework for
    assessing prejudice, which he contends is inconsistent with Martinez and
    our en banc opinion in Dickens v. Ryan, 
    740 F.3d 1302
     (9th Cir. 2014).
    He argues that this framework is “impossible-to-meet,” in that it requires
    a petitioner to “prove the merits of his ineffective assistance claim before
    any evidentiary development of the defaulted, undecided claim just to
    clear the cause-and-prejudice hurdle to excuse the claim’s procedural
    default.” See Detrich v. Ryan, 
    740 F.3d 1237
    , 1245–46 (9th Cir. 2013) (en
    banc) (plurality opinion) (stating that a prisoner “need not show actual
    prejudice resulting from his PCR counsel’s deficient performance, over
    and above his required showing that the trial-counsel IAC claim [is]
    ‘substantial’ under the first Martinez requirement”).
    26                    RUNNINGEAGLE V. RYAN
    None of Runningeagle’s procedurally defaulted IAC
    claims satisfies both the substantiality and deficient
    performance criteria. Therefore, the procedural default of
    these claims is unexcused.
    1. The Mitigation-Evidence IAC Claim
    We assume, for discussion purposes only, that the
    mitigation-evidence IAC claim, Runningeagle’s strongest
    claim, is a “substantial” one, and therefore that there is “some
    merit” to the contention that Iniguez performed deficiently
    and to Runningeagle’s prejudice at sentencing.14
    We decline to revisit the Clabourne/Pizzuto standard. Assuming
    “substantial” claims and deficient performance of PCR counsel,
    Runningeagle could not ultimately obtain relief even under his preferred
    standard. Once default was excused, he would still need to prevail on the
    merits of the claim itself, which he is unable to do on any of his three
    claims. Runningeagle has had the opportunity to fully develop in the
    district court the evidentiary basis for his procedurally defaulted IAC
    claims. Under these circumstances, there is no meaningful difference
    between finding a claim in default and reviving it but denying it on its
    merits. There was no reasonable probability that PCR proceedings would
    have reached a different result if PCR counsel had raised the defaulted
    claim. Thus, were we to find cause for default under the Detrich
    plurality’s proposed standard, we would still deny the revived claim on its
    merits, because there was no reasonable probability that trial and
    sentencing proceedings would have had a different result if trial counsel
    had performed effectively.
    14
    Martinez suggests, via a “Cf.” citation to Miller-El v. Cockrell,
    
    537 U.S. 322
     (2003), that the substantiality standard is comparable to the
    standard for a certificate of appealability to issue under 
    28 U.S.C. § 2253
    (c)(2). Martinez, 
    132 S. Ct. at
    1318–19. Under this permissive
    standard, a petitioner need show only that “jurists of reason could disagree
    with the district court’s resolution of his constitutional claims or that
    jurists could conclude the issues presented are adequate to deserve
    encouragement to proceed further.” Miller-El, 
    537 U.S. at 327
    .
    RUNNINGEAGLE V. RYAN                        27
    a. Antieau’s Performance Was Not Deficient.
    Under Martinez’s recursive framework, the next step is to
    evaluate PCR counsel’s performance and its effect.
    Runningeagle contends that PCR counsel, Antieau, was
    ineffective for failing to investigate the failure to investigate
    by his predecessor, trial counsel Iniguez.
    There is little record evidence, one way or the other,
    bearing on whether Antieau’s performance in PCR
    proceedings was reasonable “under prevailing professional
    norms.” Strickland, 
    466 U.S. at 688
    . First, Durand, the
    investigator appointed to assist Antieau in the PCR
    proceedings, declared in 2013 that Antieau was
    “overwhelmed by the case,” was “not always prepared,” and
    “did not perform adequately or appropriately”; that Durand
    “suspected that he had poly-substance abuse issues, including
    a problem with alcohol”; and that she did not recall “doing
    any investigative work on either the trial or sentencing
    portions of Runningeagle’s case.”            This equivocal
    declaration, signed more than 20 years after the fact, does not
    establish ineffective performance. Durand declared that she
    did not remember performing investigative work, not that she
    did not perform it. One of Antieau’s contemporaneous filings
    in the PCR proceedings, which stated that Durand had “not
    yet completed her work,” undercuts her recollection.
    Second, Runningeagle faults Antieau for failing to
    provide Dr. Bendheim, the mental health expert appointed in
    PCR proceedings, with materials outside the trial record. But
    it is not necessarily ineffective to tailor one’s investigations
    to limitations of time and money, see 
    id. at 681
    , and, given
    Dr. Bendheim’s preliminary impression that the appropriate
    diagnosis for Runningeagle could have been the same as that
    28                RUNNINGEAGLE V. RYAN
    of his co-defendant, who received a life sentence,
    Runningeagle does not show that Antieau’s pursuit of this
    lead and forbearance of others was a prejudicial strategic
    choice at the time.
    Third, Runningeagle suggests that, had Antieau framed
    his request for additional funding for Dr. Bendheim
    differently, he likely would have received it. This is both
    speculative, and smacks of the judgment in hindsight
    forbidden by Strickland, 
    id. at 680
    .                  Moreover,
    Runningeagle’s prognostication of what likely would have
    occurred is contradicted by the PCR court’s statement that
    “Petitioner . . . has taken one aspect of the Court’s sentencing
    as if it were the only basis for the Court’s determination of
    the appropriate and lawful sentence.”
    Finally, Runningeagle observes that the bulk of the claims
    Antieau raised in his supplemental PCR petition were
    dismissed for being raisable on direct appeal. This, too,
    smacks of hindsight, and does not speak to whether capable
    PCR counsel would have expected this outcome or whether
    it was typical of Arizona PCR proceedings at the relevant
    time.
    Given the “highly deferential” standard under which we
    evaluate Antieau’s performance, and the paucity of evidence
    that Antieau performed deficiently—which Runningeagle had
    a full opportunity to develop in district court following our
    limited remand—Runningeagle fails to overcome the “strong
    presumption that counsel’s conduct falls within the wide
    RUNNINGEAGLE V. RYAN                               29
    range of reasonable professional assistance.”15 
    Id. at 689
    (citation omitted). Runningeagle therefore cannot show cause
    to excuse the default of the mitigation-evidence IAC claim
    under Martinez. See Martinez, 
    132 S. Ct. at 1318
    .
    b. Antieau’s Failure to Raise the Mitigation-
    Evidence IAC Claim in PCR Proceedings Was
    Not Prejudicial.
    Even if we were to conclude that Antieau’s alleged failure
    to investigate and present the mitigation-evidence IAC claim
    in PCR proceedings was deficient, this claim would
    nevertheless fail for lack of a showing of prejudice.
    Similarly, to pretermit a lengthy and ultimately fruitless
    discussion of what Iniguez did and did not do during his
    representation of Runningeagle, others’ observations and
    recollections of Iniguez, and appropriate sentencing strategies
    15
    It is not necessary here to delineate precisely what PCR counsel’s
    duties are, and how they are similar to or different from those of trial or
    appellate counsel. Martinez contemplates that effective PCR counsel may
    investigate “evidence outside the trial record” to determine whether a trial-
    level IAC claim may be raised, 
    132 S. Ct. at 1318
    , but Martinez is silent
    as to the scope of the duty to investigate in PCR proceedings. The
    effectiveness of PCR counsel is evaluated “under the standards of
    Strickland,” 
    id.,
     but before Martinez there was no occasion to apply
    Strickland’s constitutional standard in the PCR setting, where there is no
    established constitutional right to counsel. Strickland is crystal-clear,
    however, that effective performance is measured not by reference to any
    “set of detailed rules,” but rather by assessing “the reasonableness of
    counsel’s challenged conduct on the facts of the particular case, viewed
    as of the time of counsel’s conduct.” 
    466 U.S. at
    688–90. Even if we
    accept Runningeagle’s contention that PCR counsel has a broad duty to
    investigate and preserve potentially meritorious trial-level IAC claims,
    Runningeagle simply does not carry his burden to show that Antieau
    “made errors so serious that [he] was not functioning as . . . ‘counsel.’”
    
    Id. at 687
    .
    30                RUNNINGEAGLE V. RYAN
    and sources of standards of care, we assume arguendo that
    Iniguez’s investigation and presentation of mitigation
    evidence was deficient for purposes of Strickland. See
    Strickland, 
    466 U.S. at 697
     (“The object of an ineffectiveness
    claim is not to grade counsel’s performance. If it is easier to
    dispose of an ineffectiveness claim on the ground of lack of
    sufficient prejudice . . . that course should be followed.”).
    Runningeagle contends that Iniguez prejudiced his
    defense during the penalty phase by failing to investigate or
    present key mitigation evidence. Runningeagle identifies
    several areas of his life that he argues Iniguez left
    unexplored: his difficult early childhood; his social and
    educational history; his medical background; his use of
    alcohol; the effect of his Native American heritage on his
    behavior and demeanor; and mental health evidence that he
    claims invalidates the diagnosis of antisocial personality
    disorder and may support a diagnosis of Post-Traumatic
    Stress Disorder (“PTSD”). Runningeagle also faults Iniguez
    for mishandling the request of expert reports under Rule 26.5,
    and failing to provide Doctors Bayless and Enos and the
    probation officers with the evidence Iniguez allegedly would
    have uncovered had he adequately investigated these areas.
    i. Much of Runningeagle’s Newly Offered
    Evidence Is Cumulative.
    Iniguez examined or cross-examined a number of
    Runningeagle’s family members and acquaintances at
    evidentiary hearings, and solicited 15 letters on his behalf.
    This testimony and evidence detailed Runningeagle’s
    childhood circumstances, including his mother’s alcoholism,
    his social and educational history, and his medical problems
    as a child. The PSRs also described Runningeagle’s troubled
    RUNNINGEAGLE V. RYAN                              31
    family background, criminal history, peripatetic education
    and social circumstances, and history of childhood illness and
    injury.16 The sentencing court considered these materials
    when it decided which sentence to impose.
    The pertinent new evidence that Runningeagle offers
    includes the declarations of family members, classmates, ex-
    girlfriends, and the parents of one ex-girlfriend; and medical,
    educational, and juvenile records. This evidence does not
    materially expand upon what was already before the
    sentencing court. For instance, it is troubling to learn that, as
    a child, Runningeagle lived in a squalid house, surrounded by
    adults with substance abuse problems, who offered little
    nurturing; that he frequently observed violence among family
    members; and that he was sometimes so hungry, he would eat
    Vitamin C tablets. But this information does not alter the
    sentencing profile that was before the court. This included
    the letters, live testimony, and PSR that described “a great
    deal of dysfunction in the family,” a house with “very little
    furniture and household provisions,” in which there was
    frequently “no food,” and circumstances that led
    Runningeagle’s probation officer to be “tempted on more
    16
    Runningeagle contends the PSRs were “largely erroneous and
    incomplete.” He takes particular issue with the statement in the earlier of
    the two reports that “[w]ith the exception of drinking problems on the part
    of both his mother and stepfather, the defendant experienced no significant
    difficulties during his youth.” However, the second PSR contradicted the
    first, and provided several examples of Runningeagle’s childhood
    struggles. The second PSR stated that Runningeagle himself denied
    having “any dysfunction in his family,” and that the new and troubling
    information, which was “contrary to the defendant’s statement,” came
    from his juvenile probation officer. Cf. Strickland, 
    466 U.S. at 691
    (“[W]hat investigation decisions are reasonable depends critically on”
    “information supplied by the defendant.”).
    32               RUNNINGEAGLE V. RYAN
    than one occasion to contact Child Protective Services.”
    Additional details about Runningeagle’s childhood sicknesses
    and injuries, or the vouchings of more remote acquaintances,
    likewise would not have affected the balance of mitigating
    against aggravating circumstances. See Strickland, 
    466 U.S. at 695
    ; see also Bobby v. Van Hook, 
    558 U.S. 4
    , 11–12
    (2009).
    Runningeagle also argues that Iniguez did not properly
    investigate or present mitigation evidence regarding his use
    of alcohol. However, the court was aware that Runningeagle
    was intoxicated at the time of the murders. The presentence
    reports and Dr. Enos’s report each made reference to
    Runningeagle’s problems with alcohol. Further, Iniguez’s
    sentencing memorandum argued that Runningeagle’s alcohol
    use was a basis for leniency, and referred to trial evidence
    that, on the night of the murders, Runningeagle had been
    “drinking a powerful intoxicating liquor called Jungle Juice
    which is supposedly a mixture of Everclear and fruit juices.
    There is also evidence that defendant was drinking beer as
    well.” Once again, the new evidence Runningeagle offers as
    to this issue is cumulative, and does not create a reasonable
    probability that the sentencer would have differently balanced
    aggravating and mitigating circumstances. Strickland,
    
    466 U.S. at 695
    .
    ii. The New Mental Health and Cultural
    Evidence Is Equivocal.
    The only new evidence offered by Runningeagle that does
    not merely elaborate upon what was already in the record
    concerns his mental health and the effect of his Native
    American cultural background on his manner of expressing
    himself. This evidence consists of (1) a 13-paragraph
    RUNNINGEAGLE V. RYAN                     33
    declaration of psychologist Katherine DiFrancesca, dated
    August 20, 1996; (2) a 44-page report prepared by forensic
    psychologist Charles Harris Heller, dated July 17, 2006; and
    (3) a two-page, unsworn letter from psychiatric consultant
    Pablo Stewart to Runningeagle’s habeas counsel, dated
    January 22, 2013. As the district court correctly concluded,
    this evidence is “equivocal” at best, and is insufficient to
    demonstrate Strickland prejudice.
    Dr. DiFrancesca’s affidavit was based on two personal
    meetings with Runningeagle, the Enos, Bayless, and Martig
    reports, juvenile and medical records, and social history
    information. Dr. DiFrancesca opined that Runningeagle was
    an alcoholic, suffered from “psychological and mental
    disorders resulting from his alcoholism,” and had a
    conscience, and that the diagnosis of antisocial personality
    disorder was likely incorrect. She further opined that
    Runningeagle did not show his emotions publicly, including
    at his court proceedings, because he was raised within Native
    American culture, but that he felt “genuine remorse and
    shame” for the killings. Dr. DiFrancesca gave no affirmative
    diagnosis.
    Dr. Heller’s report was based upon a forensic examination
    of Runningeagle, his review of a variety of records, and his
    expertise in Native American mental health and culture,
    which he developed while providing mental health services
    to the Cherokee Nation of Oklahoma. Dr. Heller opined that
    Runningeagle had “severe alcoholism,” as well as “indicators
    of post-traumatic stress which are unique to his childhood as
    a Native American child in Phoenix and . . . multiple
    traumatic experiences.” Dr. Heller suggested that Dr. Bayless
    and Dr. Enos had wrongly diagnosed Runningeagle with
    antisocial personality disorder, because clinicians most
    34                   RUNNINGEAGLE V. RYAN
    familiar with Caucasian patients tend to misdiagnose Native
    Americans and fail to perceive symptoms of stress and
    anxiety. However, Dr. Heller found that Runningeagle “does
    not meet full criteria for PTSD,” although he criticized these
    “classical” criteria as they applied within the chronically
    stressful environment encountered by many Native
    Americans. Dr. Heller opined that “the likely reason why
    [Runningeagle] fails to meet full diagnostic criteria for PTSD
    is because he tends to minimize his symptoms in order to
    adhere to his false sense of self.” Dr. Heller diagnosed
    Runningeagle with “an anxiety disorder not otherwise
    specified with PTSD features.”
    Dr. Stewart wrote that he interviewed Runningeagle for
    five hours, and had reviewed “a variety of social history
    documents including trial court proceedings, witness
    declarations, medical-mental health-school records, custodial
    records and the psychological evaluation of Dr. Heller dated
    July 17, 2006.” He opined “to a reasonable degree of medical
    certainty[] that Mr. Runningeagle currently suffers from
    Posttraumatic Stress Disorder and that he suffered from this
    condition at the time of the offenses for which he has been
    sentenced to death.” Dr. Stewart also speculated that
    Runningeagle may have suffered from Autistic Spectrum
    Disorder, Major Depressive Disorder, and Substance-Related
    Disorder at the time of the killings, but that further evaluation
    was needed as to these conditions.17
    Runningeagle argues that, had Iniguez provided capable
    mental health professionals with complete records, along with
    17
    Although Stewart’s letter referred to an imminent diagnostic visit with
    Runningeagle scheduled for February 4, 2013, as of October 2, 2014, the
    district court had not received any evidence of further tests.
    RUNNINGEAGLE V. RYAN                       35
    supporting expert analysis of his Native American cultural
    expression, the experts would have produced reports that
    looked more like the newly submitted materials than the Enos
    and Bayless reports, which Runningeagle contends should
    never have been presented to the sentencing court. These
    arguments are not persuasive.
    First, the sentencing court stated expressly that, although
    it did not treat the Bayless and Enos reports as sufficient
    mitigating evidence, it also did not “use[] the information or
    the conclusions in these reports as aggravating
    circumstances.” Thus, had Iniguez successfully excluded
    these reports, Runningeagle’s balance of mitigating and
    aggravating circumstances would have remained the same,
    according to the sentencing judge.
    Second, while the court remarked at the sentencing
    hearing and in its special verdict that Runningeagle had not
    shown empathy for the victims, and displayed little emotion
    for his family and friends, this was not the basis for its
    sentence. On the day of the sentencing hearing, the court
    observed that Runningeagle had “expressed some feelings
    towards his family or friends,” but this did not change its
    conclusions. The court focused not on Runningeagle’s
    apparent lack of affect, but on the thrill he apparently derived
    from committing the crimes, including the murders. Doctors
    DiFrancesca and Heller explained why people raised within
    a Native American culture might suppress negative emotions,
    downplay family conflict, or poke fun at themselves, but
    there was no evidence that the laughter, joy, and boasting
    following the murders was a shared form of cultural
    expression in response to heinous acts rather than an
    36                  RUNNINGEAGLE V. RYAN
    expression personal to Runningeagle.18 Thus, it is speculative
    to suggest that expert testimony about Native American
    culture would have altered Runningeagle’s sentence.
    Finally, even if there was some set of steps Iniguez should
    have taken that would have led his mental health experts to
    produce reports more like Doctors DiFrancesca’s, Heller’s,
    and Stewart’s—a speculative and hindsight-plagued
    assumption—these reports are not of material mitigating
    weight. Dr. DiFrancesca gave no affirmative diagnosis. Dr.
    Heller used qualifying language, and concluded that
    Runningeagle did not meet the full diagnostic criteria for
    PTSD. Dr. Stewart, who projected the greatest certainty in
    his diagnosis, produced it more than 20 years after the crimes
    were committed, and provided no supporting analysis. Our
    precedent asks us to examine whether “the difference
    between the evidence that could have been presented and that
    which actually was presented is sufficient to ‘undermine
    confidence in the outcome’ of the proceeding.” Duncan v.
    Ornoski, 
    528 F.3d 1222
    , 1240 (9th Cir. 2008) (quoting
    Strickland, 
    466 U.S. at 694
    ). Runningeagle fails to
    demonstrate Strickland prejudice under this standard. See
    Leavitt v. Arave, 
    646 F.3d 605
    , 614 (9th Cir. 2011) (“Such
    [diagnostic] opinions, which couch results in tentative
    language, are simply not enough to show prejudice.”);
    Rhoades v. Henry, 
    638 F.3d 1027
    , 1050 (9th Cir. 2011)
    (“Speculation about potential brain dysfunctions or disorders
    ‘is not sufficient to establish prejudice.’”) (citation omitted);
    cf. 
    id.
     (“The mitigating value of [Dr. Pablo] Stewart’s most
    18
    The sentencing court noted that Tilden, whom Runningeagle concedes
    came from an “almost identical background[],” did not display the same
    positive “degree of relishing” as Runningeagle, and showed remorse and
    emotion.
    RUNNINGEAGLE V. RYAN                       37
    concrete assessment, that Rhoades ‘does suffer’ from
    Post-traumatic Stress Disorder (PTSD), is lessened because
    his diagnosis admittedly does not satisfy the requirements of
    DSM–IV for this condition.”).
    There is no “reasonable probability” that, had Iniguez
    presented the new evidence, separately or collectively, “the
    sentencer . . . would have concluded that the balance of
    aggravating and mitigating circumstances did not warrant
    death.” Strickland, 
    466 U.S. at 695
    . Therefore, even
    assuming deficient performance by Antieau and Iniguez,
    Runningeagle cannot show cause for the default of the
    mitigation-evidence IAC claim. Martinez, 
    132 S. Ct. at 1318
    ;
    Pizzuto, 783 F.3d at 1178.
    2. The Inculpation IAC Claim
    At trial, “Runningeagle’s defense rested on the theory that
    the state failed to meet its burden of proof.” Runningeagle II,
    686 F.3d at 777. Runningeagle contends that this strategy
    was objectively unreasonable, and Iniguez should have
    argued at trial and sentencing that Tilden was the one who
    killed the Williamses, and that he was the “leader” of the
    group on the night of the murders. Runningeagle fails to
    show that this was a substantial IAC claim, much less that
    Antieau performed deficiently or prejudicially by failing to
    raise it in PCR proceedings.
    No record or extra-record evidence supports the theory
    that Tilden personally killed either victim. Although it is true
    that the government’s case against Runningeagle relied
    primarily on circumstantial evidence, the evidence that
    Runningeagle—not Tilden—stabbed the Williamses to death
    38                    RUNNINGEAGLE V. RYAN
    was overwhelming.19 Runningeagle’s theory that Tilden
    could have been the killer is based on Orva Antone’s
    testimony that he witnessed Tilden striking Mrs. Williams in
    the head with a flashlight, and the testimony of a medical
    expert, Dr. George Bolduc, on cross-examination that these
    “blunt force injuries of the head could have been of a fatal
    nature.” However, Dr. Bolduc consistently testified that Mrs.
    Williams’s death was caused by a perforated heart, liver, and
    aorta, due to stab wounds through the chest and abdomen. In
    context, Dr. Bolduc’s description of the blunt force injuries
    as potentially “fatal” meant that they could have caused death
    but for the intervening stab wounds, not that the head trauma
    could have been the actual cause of death.
    19
    As we summarized this evidence previously:
    [T]he police found Runningeagle’s palm print on the
    clothes dryer next to the victims’ bodies and matched
    Runningeagle’s shoes with the bloody shoe prints found
    at the house. Runningeagle discussed the crimes
    several times before his arrest and told his
    girlfriend—who testified at trial, and to whom he
    showed his car trunk full of the property stolen from the
    Williamses—that “he had been in a fight with two
    people and had hit them ‘full-force.’” When the police
    arrested Runningeagle, they found the Williamses’
    stolen property. The evidence is even stronger in light
    of Antone’s testimony that Runningeagle taunted and
    threatened the Williamses with his knife, waved the
    knife at them as they retreated, and then broke through
    the Williamses’ door with a tire iron after the
    Williamses tried to get away.
    Runningeagle II, 686 F.3d at 770 (citations omitted); see also
    Runningeagle I, 
    859 P.2d at 174
     (“The trial court . . . found Runningeagle
    in fact killed the victims, and we agree.”).
    RUNNINGEAGLE V. RYAN                            39
    Runningeagle suggests that Iniguez could have swayed
    the judge or jury by uncovering and presenting evidence of
    Tilden’s “violent past.” However, this evidence would have
    been inadmissible at trial under Arizona Rule of Evidence
    404(a), which prohibits the introduction of propensity
    evidence to prove that an individual acted “in conformity
    therewith on a particular occasion.”20 Even if this evidence
    could have been presented at sentencing, there is no showing
    that it could have possibly led Runningeagle, to whom the
    evidence overwhelmingly pointed as the killer, to receive a
    reduced sentence. As we previously concluded, “the trial
    court’s detailed Special Verdict makes clear that the likely
    result of further inculpation of Tilden was a death sentence
    for Tilden and not a life sentence for Runningeagle.”
    Runningeagle II, 686 F.3d at 771–72.
    Because Runningeagle fails to show that the inculpation
    IAC claim was a “substantial” one of “some merit,” the
    procedural default of this claim is not excused under
    Martinez. 
    132 S. Ct. at 1318
    .
    3. The Second-Counsel IAC Claim
    Runningeagle argues that Iniguez provided
    constitutionally deficient representation by failing to request
    the appointment of second counsel.               Once again,
    Runningeagle does not show that this is a substantial IAC
    claim for purposes of Martinez.
    20
    Arizona Rule of Evidence 404 was amended effective November 1,
    1988, after trial and before sentencing. The quoted language appears in
    the codification in effect at each time.
    40                RUNNINGEAGLE V. RYAN
    Runningeagle relies on the 1989 ABA Guidelines, which
    stated that “[i]n cases where the death penalty is sought, two
    qualified attorneys should be assigned to represent the
    defendant.” However, the Supreme Court has stressed that,
    while ABA Guidelines may be “evidence of what reasonably
    diligent attorneys would do,” they do not define counsel’s
    federal constitutional duty to “make objectively reasonable
    choices.” Van Hook, 
    558 U.S. at
    8–9 (citation omitted).
    Further, the Supreme Court has cautioned against the
    inference of per se rules of reasonableness from professional
    standards “so detailed that they would interfere with the
    constitutionally protected independence of counsel and
    restrict the wide latitude counsel must have in making tactical
    decisions.” 
    Id.
     at 8 n.1 (citation omitted). The 1989
    Guidelines are not, standing alone, enough to raise a
    substantial IAC claim. Rather, “[t]rial counsel cannot be said
    to be constitutionally ineffective [solely] for deciding not to
    bring in co-counsel,” and, to raise a substantial claim,
    Runningeagle must present evidence of “some reason . . .
    why the first lawyer is unable to provide adequate
    representation.” Allen v. Woodford, 
    395 F.3d 979
    , 998 (9th
    Cir. 2005) (alterations in original) (citation omitted).
    Runningeagle observes that Tilden’s counsel, Steinle, an
    experienced capital defense lawyer, obtained second counsel
    to assist him. Runningeagle also presents a September 27,
    1988 letter from local counsel to Iniguez offering to assist
    with the sentencing hearing. This letter states that Iniguez
    had not returned counsel’s earlier call. Finally, Newman, the
    investigator who interviewed Iniguez in 1994, declared that
    Iniguez stated that he felt “overwhelmed” by Runningeagle’s
    case.
    RUNNINGEAGLE V. RYAN                             41
    Runningeagle makes no freestanding showing of
    prejudice caused by any deficient performance, and so he
    cannot show that Iniguez performed deficiently by failing to
    request the appointment of second counsel.21 Because
    Runningeagle’s second-counsel IAC claim is insubstantial, he
    fails to show cause to excuse its default under Martinez.
    D. The District Court Did Not Abuse Its Discretion by
    Denying Runningeagle’s Request for an Evidentiary
    Hearing.
    The district court granted Runningeagle’s motion to
    expand the record with a number of the exhibits described
    above. However, it denied Runningeagle’s request for an
    evidentiary hearing at which he sought to present live
    testimony from Tilden’s counsel, Drs. Stewart and Heller,
    trial defense investigator Gloria Castillo, mitigation fact
    witnesses, and experts in mitigation and capital defense. On
    this appeal, Runningeagle contends that, if Martinez cause is
    not shown outright, he is entitled to further factual
    development in district court.
    21
    Although we have assumed that Runningeagle’s mitigation-evidence
    IAC claim is “substantial,” there is no demonstrated nexus between
    Iniguez’s performance during the penalty phase and his lack of co-
    counsel. Even if such a nexus existed, Runningeagle would be unable to
    show cause for the default of the second-counsel IAC claim. As we have
    discussed, Antieau’s failure to raise the mitigation-evidence IAC claim in
    PCR proceedings was not prejudicial. Likewise, Runningeagle cannot
    show that Antieau’s failure to raise the second-counsel IAC claim was
    prejudicial, where the supposed prejudice caused by the underlying
    allegedly deficient performance—failure to investigate and properly
    present mitigation evidence—is identical. We reject Runningeagle’s
    cumulative error argument, which would require us to accumulate a
    number of trial-level IAC claims that we have found insubstantial or
    unsuccessful on the merits in this and our prior opinion.
    42                  RUNNINGEAGLE V. RYAN
    We review for an abuse of discretion a district court’s
    determination that a petitioner is not entitled to an evidentiary
    hearing.22 Hurles v. Ryan, 
    752 F.3d 768
    , 777 (9th Cir.), cert.
    denied, 
    135 S. Ct. 710
     (2014). Where documentary evidence
    provides a sufficient basis to decide a petition, the court is
    within its discretion to deny a full hearing. Phillips v.
    Ornoski, 
    673 F.3d 1168
    , 1179 (9th Cir. 2012). “In deciding
    whether to grant an evidentiary hearing, a federal court must
    consider whether such a hearing could enable an applicant to
    prove the petition’s factual allegations, which, if true, would
    entitle the applicant to federal habeas relief.” Schriro v.
    Landrigan, 
    550 U.S. 465
    , 474 (2007).
    We conclude that the district court did not abuse its
    discretion in denying an evidentiary hearing. “[O]ral
    testimony and cross-examination were not necessary because
    the documentary evidence submitted fully presented the
    relevant facts.” Williams v. Woodford, 
    384 F.3d 567
    , 591
    (9th Cir. 2004). The expanded record included the
    declarations of witnesses who would testify at a live hearing,
    and Runningeagle made no showing that their testimony
    would differ materially from their declarations. The
    credibility of these witnesses was not at issue, and could not
    have rendered their testimony sufficient to show cause under
    Martinez.
    22
    Because Runningeagle sought to present evidence to support a
    showing of Martinez cause rather than to support directly a claim raised
    in state court, we do not review his request for an evidentiary hearing
    under the demanding standard of 
    28 U.S.C. § 2254
    (e)(2). See Dickens,
    740 F.3d at 1321.
    RUNNINGEAGLE V. RYAN                     43
    V. Conclusion
    Runningeagle has not shown cause for the procedural
    default of his IAC claims, nor has he shown that further
    district court proceedings are warranted. We therefore affirm
    the district court’s judgment and order, and its continued
    denial of Runningeagle’s habeas petition. As the Martinez
    claims are hereby resolved, we lift the stay of the mandate
    imposed by our July 18, 2012 order. It may issue in the
    regular course.
    AFFIRMED.