Damien Preston seeks habeas relief based on an alleged violation of his rights under the Confrontation Clause of the United States Constitution. We agree that the use of a witness's prior statements against Preston violated the Confrontation Clause because the witness, Leonard Presley, refused to answer any substantive questions on cross-examination. However, Preston's Confrontation Clause claim is procedurally defaulted.

Preston argues that ineffective assistance of trial counsel ("IATC"), namely, counsel's failure to raise a Confrontation Clause objection at trial, provides cause to excuse the procedural default of the underlying Confrontation Clause claim. Before his IATC claim, which is itself procedurally defaulted, can serve as cause to excuse the procedural default of his Confrontation Clause claim, Preston must surmount two obstacles. First, he must overcome the procedural default of his IATC claim. Second, he must demonstrate that trial counsel's performance was constitutionally ineffective under the two-pronged test established in Strickland v. Washington , 466 U.S. 668 , 104 S.Ct. 2052 , 80 L.Ed.2d 674 (1984). We find that, under Martinez v. Ryan , 566 U.S. 1 , 132 S.Ct. 1309 , 182 L.Ed.2d 272 (2012), the procedural default of his IATC claim is excused. However, because he cannot show that he was prejudiced by trial counsel's failure to raise a Confrontation Clause objection, Preston's IATC claim fails at the second prong of the Strickland analysis. Therefore, we are unable to grant Preston habeas relief, and we will affirm the District Court's order dismissing Preston's habeas petition.

I. BACKGROUND 1

Damien Preston is currently serving a twenty- to forty-year sentence for third degree murder for his role in the 2000 death of Kareem Williams, who was shot in *369 the midst of a physical fight with Preston and his brother Leonard Presley. 2

A. Leonard's Trial

In 2001, Leonard was arrested for his role in the shooting and tried before a jury in Pennsylvania state court. At his trial, Leonard took the stand in his own defense. In testimony that was consistent with the statement he gave to police after he was arrested, Leonard explained that, on the day of the shooting, he parked his car on the 1900 block of Dennie Street in Philadelphia. Williams and a woman named Latoya Butler were sitting in front of a house on the same block. Preston and another man named Chris were also standing on the block. Leonard approached Williams and asked to have a word with him. The two men walked a short distance down the street and had a brief conversation about a rumor Leonard had heard about Williams. Williams then walked away and entered an alley off of Dennie Street, where he retrieved a bag and tucked "something shiny" into the waistband of his pants. JA773. According to Leonard, the shiny object "looked like" a gun. Id. Williams told Butler that he would "be back," continued down Dennie Street, and turned the corner onto Wayne Avenue. Leonard followed Williams around the corner onto Wayne Avenue, and the two men began fighting.

At one point during the fight, Williams had his back against the hood of a car parked along Wayne Avenue, with Leonard facing him. According to Leonard, Preston then came up behind him and began swinging at Williams over Leonard's shoulder. Leonard heard a gunshot, turned around, and saw Preston running away. Leonard ran away as well, passing Butler on the corner of Dennie Street and Wayne Avenue. Leonard did not see who fired the shot, but he testified that it came from somewhere behind him. Leonard, Preston, and Williams were the only people involved in the fight. Leonard testified that he had not shot Williams and that Williams could not have shot himself because the shot came from behind Leonard, who was facing Williams. Therefore, Leonard "guess[ed]" his brother had shot Williams. JA776. Leonard was found guilty of third degree murder.

B. Preston's Trial

A year later, Preston was arrested for his role in Williams's death. He was tried before a jury in October 2003 in the Pennsylvania Court of Common Pleas. Preston was represented by counsel at trial.

1. The Commonwealth's Case-in-Chief

The Commonwealth's primary witness at Preston's trial was Latoya Butler. Butler testified that she and Williams were sitting on a porch on the 1900 block of Dennie Street on the day of the shooting. Leonard pulled up in a car and joined Preston and Chris on a nearby porch. Leonard approached Williams and asked to speak with him. Leonard and Williams walked down the street and spoke briefly. Williams returned to Butler's porch looking "upset" and told her that he would "be back." JA522. As Williams walked away, Leonard told him "You better come back with something big because I'm playing with them big boys." JA522. Williams walked down Dennie Street and stopped in an alleyway, where he "picked up something." JA522. He continued down Dennie Street and turned onto Wayne Avenue. Leonard followed Williams onto Wayne Avenue. After *370 a few moments, Preston, followed by Butler, walked down Dennie Avenue and turned the corner onto Wayne Avenue as well.

Butler testified that when she turned the corner onto Wayne Avenue, she saw the three men fighting. Leonard had Williams pinned down on the hood of a parked car, and he and Preston were hitting Williams. According to Butler, Preston backed up "about two steps," so he was standing to the left of Williams. JA524. She testified that "the way [Leonard] had [Williams] pinned down, [Williams's] whole left side was open for [Preston] to shoot him." JA525. Preston stretched out his right arm and aimed "something" at Williams. JA524. Preston's hand and whatever was in it were covered by a sweatshirt. Butler then heard a "big loud pop" and heard Preston ask Williams "You want some more, you want some more?" JA525. Williams fell "flat on his face." JA526. Preston and Leonard fled, passing Butler on the corner of Dennie Street and Wayne Avenue. As Butler approached Williams, he told her "They got me." JA526. Butler accompanied Williams to the hospital, where she gave police a statement that was consistent with her in-court testimony and identified Preston and Leonard in a photo array.

Butler also testified to the pre-existing animus between Williams and the two brothers. According to Butler, Preston and Leonard had sold drugs on the 1900 block of Dennie Street for several years. About four months before the shooting, Williams began selling drugs on the same block. Shortly before the shooting, Preston had confronted Williams and told him he could no longer sell drugs there because he wasn't "from the block." JA520. Preston and Williams had also had at least one physical altercation in the past.

The jury also heard from the medical examiner, whose testimony largely corroborated Butler's. He testified that Williams had been shot in the left buttock area and that the trajectory of the bullet was consistent with a shooter standing on Williams's left side. He also testified that Williams's facial injuries indicated that he had fallen flat on his face after being shot. Although he could not conclude that Williams had been shot at close-range, the medical examiner testified that he had been unable to examine Williams's clothing, which may have contained evidence of a close-range shooting. He also testified that if the muzzle of the weapon had been covered by a sweatshirt, as Butler testified it was, it would have filtered out evidence of a close-range shooting.

Law enforcement officers testified to the physical evidence recovered from the scene. Officers recovered a bullet from the street in front of a parked car on Wayne Avenue. The hood of the parked car was dented, as one would expect if a body had been pressed against it. The Commonwealth also introduced evidence that Preston fled to North Carolina after the shooting and that no gun was recovered from Williams's body.

The Commonwealth then called Leonard as a witness. Leonard asserted his Fifth Amendment privilege against self-incrimination and refused to testify. Leonard was concerned that his testimony would jeopardize the pending appeal of his own criminal conviction. He was granted immunity by the District Attorney's office and was therefore compelled to testify. See Kastigar v. United States , 406 U.S. 441 , 458, 92 S.Ct. 1653 , 32 L.Ed.2d 212 (1972) ("use and derivative-use immunity is constitutionally sufficient to compel testimony over a claim of the privilege"). Apparently, this did not assuage Leonard's concerns, and he again refused to testify. See JA599 *371 (Leonard replying "No comment. No comment." to the Commonwealth's questions); JA606 ("I'm in a state of appeal. That's why I said no comment, because I'm in the course of my appeal."). The Commonwealth sought to introduce both the statement Leonard had given to police after his arrest and his testimony from his own criminal trial as admissible hearsay under Commonwealth v. Brady , 510 Pa. 123 , 507 A.2d 66 (1986). 3 Defense counsel said he had "no problem with [Leonard] being Bradyized" using his police statement. JA598. However, counsel did object to the admission of Leonard's prior testimony. He noted that he did not have a chance to cross-examine Leonard, but framed his objection along the lines of Pennsylvania Rule of Evidence 804(b), rather than as a Confrontation Clause claim. 4 JA598.

The trial court allowed the Commonwealth to use both Leonard's police statement and his prior testimony. The prosecutor read aloud portions of the two statements, occasionally stopping to ask Leonard if he remembered making them. Leonard largely replied "no comment." In this manner, the jury heard Leonard's version of events, as described above. Defense counsel then attempted to cross-examine Leonard. With three exceptions, Leonard replied "no comment" to every question asked by defense counsel. 5

2. The Defense's Rebuttal

Preston took the stand in his own defense. His testimony was nearly identical to Butler's and Leonard's. He testified that he, Leonard, Chris, Butler, and Williams were all on the 1900 block of Dennie Street on the day of the shooting and that Leonard asked to speak with Williams. Leonard and Williams walked down the street and had a brief conversation. Williams looked upset, and it was clear that there was some sort of "problem." JA682. Williams told Butler he would "be back" and walked down Dennie Street and around the corner onto Wayne Avenue. Id. Leonard yelled something at Williams as he walked away, then he followed Williams around the corner. Preston followed Leonard, and when he turned the corner he saw the two men fighting. Williams was pressed against the hood of a parked car, with Leonard facing him. Preston joined the fight and began swinging at Williams over Leonard's shoulder. Then he heard a gunshot and ran away, passing Butler on the corner of Wayne Avenue and Dennie Street. Contrary to Butler's and Leonard's versions of events, Preston testified that he had not fired the shot and didn't have "any idea" where the gunshot came from. JA673.

The defense called two additional eyewitnesses, Kenneth Stanfield and Christopher *372 Malloy. Stanfield testified that he saw the three men fighting on the hood of a parked car and heard a shot come from the direction of the three men. He did not know who fired the shot and he had not seen anyone with a gun. He also testified that Latoya Butler didn't turn the corner onto Wayne Avenue until after the shot was fired. Contrary to Butler's testimony, he testified that Preston was standing to the right of Williams. However, Stanfield's testimony suffered from several inconsistencies. For example, he testified that Leonard drove his car around the corner of Dennie Street and parked it on Wayne Avenue before engaging with Williams, whereas all the other eyewitnesses testified that Leonard followed Williams on foot. He also testified that he learned of Williams's death the same day as the shooting, which was impossible because Williams did not die from his wounds until the following day.

Malloy also testified that he saw the three men fighting. Although he did not see any of them with a gun, he intimated that Williams's wound had been self-inflicted. See JA657 (testifying that neither Preston nor Leonard had a weapon and that right before the shot was fired he saw Williams "reach in back" to grab something). He also testified that he did not see Butler turn the corner onto Wayne Avenue until after the shot was fired. Like Stanfield's testimony, Malloy's testimony was marred by several inconsistencies. For example, he testified that the three men were fighting on the sidewalk, not on the hood of a parked car. This was inconsistent with all the other eyewitness testimony as well as the physical evidence recovered from the scene. And Malloy's suggestion that the gunshot wound was self-inflicted contradicted the medical examiner's conclusion that Williams had been shot by someone standing to his left.

At the close of the evidence, the jury was instructed to consider first, second, and third degree murder. 6 The jury was also instructed on accomplice liability. 7 The members of the jury were permitted to consider Leonard's police statement and prior testimony as substantive evidence, but they were told to view that evidence with disfavor because Leonard was an accomplice to the crime. The jury found *373 Preston guilty of third degree murder, and he was sentenced to twenty to forty years' imprisonment.

C. Preston's Direct Appeal

Preston was appointed new counsel on direct appeal. Pursuant to Pennsylvania Rule of Appellate Procedure 1925(b), direct appeal counsel filed a statement setting out the matters complained of on appeal. In the 1925(b) statement, counsel challenged the sufficiency of the evidence against Preston and the use of Leonard's prior testimony. However, he framed the use of Leonard's prior testimony as a violation of the Pennsylvania Rules of Evidence, not the Confrontation Clause. 8

The Pennsylvania Superior Court found Preston's challenge to the sufficiency of the evidence to be without merit. Commonwealth v. Preston , No. 598 EDA 2004, slip op. at 5-6, --- Pa.Super. ----, 943 A.2d 320 (Pa. Super. Ct. Oct. 22, 2007). As to Leonard's prior testimony, the Superior Court found that that the evidence was admissible under a hearsay exception under the Pennsylvania Rules of Evidence. Id. at 6-11. See Pa. R. Evid. 803.1(1) (a prior statement by a declarant-witness that is inconsistent with the declarant-witness's testimony is not excluded by the rule against hearsay if it was given under oath subject to penalty of perjury). The Superior Court also noted that any challenge to the admission of Leonard's police statement had been waived because it had not been properly preserved and presented to the trial court. Preston , No. 598 EDA 2004, slip op. at 7. The Pennsylvania Supreme Court denied allocatur. Commonwealth v. Preston , 596 Pa. 729 , 945 A.2d 169 (Pa. Mar. 26, 2008) (table).

D. PCRA Review

Preston filed a timely pro se petition for relief under the Post Conviction Relief Act ("PCRA"), 42 Pa. Cons. Stat. §§ 9541 -46., and was appointed counsel. Before the Court of Common Pleas, PCRA counsel raised four claims, including a claim that the use of Leonard's prior statements violated Preston's Confrontation Clause rights. However, PCRA counsel did not claim that trial counsel had rendered ineffective assistance by failing to raise and preserve the Confrontation Clause issue at trial. The Court of Common Pleas dismissed Preston's PCRA petition as without merit.

Preston, still represented by PCRA counsel, filed a notice of appeal to the Superior Court. While Preston's PCRA appeal was pending, the Court of Common Pleas issued a written opinion finding that Preston's Confrontation Clause rights had been violated, but it did not grant Preston PCRA relief or reverse its previous order dismissing Preston's PCRA petition. 9

*374 Commonwealth v. Preston , No. CP-51-CR- 0607901-2002, slip op. at 8-14 (Phila. Comm. Pl. Ct. Dec. 30, 2010). After briefing, the Superior Court affirmed the dismissal of Preston's PCRA petition. Commonwealth v. Preston , No. 2171 EDA 2010 (Pa. Super. Ct. Feb. 23, 2012) (table). Pennsylvania Supreme Court denied allocatur. Commonwealth v. Preston , 616 Pa. 663 , 50 A.3d 692 (Pa. Aug. 22, 2012).

E. Federal Habeas Review

Preston filed a timely pro se federal habeas petition in the Eastern District of Pennsylvania. He claimed that the use of Leonard's police statement and prior testimony violated Preston's rights under the Confrontation Clause, that trial counsel was ineffective for failing to raise and preserve the Confrontation Clause claim, that PCRA counsel was ineffective for failing to assert trial counsel's ineffectiveness, and that PCRA counsel's ineffective assistance caused the procedural default of Preston's IATC claim. The petition was referred to the Magistrate Judge.

The Magistrate Judge recommended that Preston's petition be denied and dismissed. He reasoned that Preston had not suffered a deprivation of his Confrontation Clause rights because the trial judge had not limited the scope of defense counsel's cross-examination and because, through the questions he asked Leonard on cross-examination and through his closing argument, defense counsel was able to "put before the jury the notion that [Leonard] was not credible[.]" JA34. The Magistrate Judge considered Leonard's refusal to answer any of defense counsel's questions insignificant because "the constitutional right to confront one's accuser does not guarantee a perfect confrontation." JA34 (citing United States v. Owens , 484 U.S. 554 , 560, 108 S.Ct. 838 , 98 L.Ed.2d 951 (1988) and Delaware v. Fensterer , 474 U.S. 15 , 21-22, 106 S.Ct. 292 , 88 L.Ed.2d 15 (1985) (per curiam) ). In the alternative, he concluded that any error the trial court had made in admitting Leonard's prior statements was harmless. The District Court approved and adopted the Magistrate Judge's Report and Recommendation and dismissed Preston's petition with prejudice.

Preston timely appealed to this Court. We appointed counsel and granted him a Certificate of Appealability on several issues:

1. Whether the admission of Leonard's prior statements violated Preston's rights under the Confrontation Clause in light of Leonard's refusal to answer any substantive questions on cross-examination;

2. Whether trial counsel rendered ineffective assistance by failing to raise that issue;

3. Whether the failure of PCRA counsel to raise Preston's claims of trial counsel ineffectiveness constitutes cause to excuse the default of that claim under Martinez , 566 U.S. 1 , 132 S.Ct. 1309 ;

4. Whether Preston's claims of trial and appellate counsel's ineffectiveness themselves show cause and *375 prejudice to excuse the default of his underlying Confrontation Clause claim. 10

II. ANALYSIS

The constitutional claim at the heart of Preston's habeas petition is that the use of Leonard's prior statements violated Preston's Confrontation Clause right to confront witnesses against him because Leonard refused to answer any substantive questions on cross-examination. "Federal habeas courts reviewing convictions from state courts will not consider claims that a state court refused to hear based on an adequate and independent state procedural ground." Davila v. Davis , --- U.S. ----, 137 S.Ct. 2058 , 2062, 198 L.Ed.2d 603 (2017). Preston's Confrontation Clause claim is procedurally defaulted because trial counsel failed to raise and preserve the Confrontation Clause issue. See 42 Pa. Cons. Stat. § 9544 (b) ("an issue is waived if the petitioner could have raised it but failed to do so before trial, at trial, during unitary review, on appeal or in a prior state postconviction proceeding"). Nonetheless, a petitioner may overcome the prohibition on reviewing procedurally defaulted claims if he can show "cause" to excuse his failure to comply with state procedure and "actual prejudice resulting from the alleged constitutional violation." Davila , 137 S.Ct. at 2065 (quoting Wainwright v. Sykes , 433 U.S. 72 , 84, 97 S.Ct. 2497 , 53 L.Ed.2d 594 (1977) ). 11

"[I]n certain circumstances counsel's ineffectiveness in failing properly to preserve the claim for review in state court" provides cause to excuse the procedural default of the underlying claim. Edwards v. Carpenter , 529 U.S. 446 , 451, 120 S.Ct. 1587 , 146 L.Ed.2d 518 (2000) (citing Murray v. Carrier , 477 U.S. 478 , 488-89, 106 S.Ct. 2639 , 91 L.Ed.2d 397 (1986) ). As Preston concedes, his IATC claim is itself procedurally defaulted because PCRA counsel failed to raise trial counsel's ineffectiveness on state collateral review. See Commonwealth v. Grant , 572 Pa. 48 , 813 A.2d 726 , 738 (Pa. 2002) (claims of trial counsel ineffectiveness are waived if not raised on PCRA review). Preston's IATC claim cannot provide cause to excuse the procedural default of his Confrontation Clause claim unless he can overcome the procedural default of the IATC claim. See *376 Edwards , 529 U.S. at 451-52 , 120 S.Ct. 1587 ("[A] procedurally defaulted ineffective-assistance-of-counsel claim can serve as cause to excuse the procedural default of another habeas claim only if the habeas petitioner can satisfy the 'cause and prejudice' standard with respect to the ineffective-assistance claim itself."). Thus, we turn first to Preston's argument that he can overcome the procedural default of his IATC claim under Martinez , 566 U.S. 1 , 132 S.Ct. 1309 .

A. Preston can overcome the procedural default of his IATC claim under Martinez .

Under Martinez , "a procedural default will not bar a federal habeas court from hearing a substantial claim of ineffective assistance at trial if, in the initial-review collateral proceeding, ... counsel in that proceeding was ineffective." 566 U.S. at 17 , 132 S.Ct. 1309 .

"[W]here state law requires a prisoner to raise claims of ineffective assistance of trial counsel in a collateral proceeding, rather than on direct review, a procedural default of those claims will not bar their review by a federal habeas court if three conditions are met: (a) the default was caused by ineffective assistance of post-conviction counsel or the absence of counsel (b) in the initial-review collateral proceeding (i.e., the first collateral proceeding in which the claim could be heard) and (c) the underlying claim of trial counsel ineffectiveness is 'substantial[.]' " Cox v. Horn , 757 F.3d 113 , 124 (3d Cir. 2014) (quoting Martinez , 566 U.S. at 14 , 132 S.Ct. 1309 ). All three of the Cox requirements are met in this case. 12 See Torrez-Ortega , 184 F.3d at 1133 ("The only answers that the government cites as departing from th[e] pattern [of obstinacy] are too elliptical and confusing to demonstrate that the defendants were ever presented with an opportunity for effective cross-examination.").

The procedural default of Preston's IATC claim was caused by PCRA counsel's failure to raise the IATC claim before the state court on collateral review. See Grant , 813 A.2d at 738 (claims of trial counsel ineffectiveness are waived if not raised on PCRA review). In order to satisfy the first Cox requirement, Preston must demonstrate that this constituted deficient performance under the first prong of the Strickland analysis-meaning that counsel's representation fell below an objective standard of reasonableness, Strickland , 466 U.S. at 688 , 104 S.Ct. 2052 . 13 See Brown v. Brown , 847 F.3d 502 , 513 (7th Cir. 2017) ("To demonstrate cause under Martinez - Trevino , the petitioner must show deficient performance by counsel on collateral review as required under the first prong of the Strickland analysis. Actual resulting prejudice can be established with a substantial claim of ineffective assistance of trial counsel that would otherwise have been deemed defaulted." (citations omitted) ); Detrich v. Ryan , 740 F.3d 1237 , 1246 (9th Cir. 2013) ("[N]o showing of *377 prejudice from PCR counsel's deficient performance is required, over and above a showing that PCR counsel defaulted a substantial claim of trial-counsel [ineffectiveness], in order to establish cause for the procedural default." (internal quotations marks omitted) ).

We find that PCRA counsel's performance was objectively unreasonable. Counsel clearly recognized that the admission of Leonard's prior statements may have violated Preston's Confrontation Clause rights, as he included a Confrontation Clause claim in the state collateral review petition. However, PCRA counsel failed to include an IATC claim or otherwise acknowledge trial counsel's failure to preserve the Confrontation Clause issue. Appellees have not provided, nor can we discern, any strategic explanation for PCRA counsel's decision. See Strickland , 466 U.S. at 689 , 104 S.Ct. 2052 (noting a presumption that, "under the circumstances, the challenged action 'might be considered sound trial strategy' " (quoting Michel v. Louisiana , 350 U.S. 91 , 101, 76 S.Ct. 158 , 100 L.Ed. 83 (1955) ) ). Thus, the first Cox requirement is satisfied.

The second Cox requirement is also satisfied here, as PCRA counsel failed to raise the IATC claim in the initial-review collateral proceeding before the Court of Common Pleas.

The final Cox requirement is met if Preston's IATC claim is " 'substantial,' meaning 'the claim has some merit,' analogous to the substantiality requirement for a certificate of appealability." Cox , 757 F.3d at 119 (quoting Martinez, 556 U.S. 1 , 14, 129 S.Ct. 1231 , 173 L.Ed.2d 173 ). Thus, the question, for Martinez purposes, is merely whether "reasonable jurists could debate" that Preston's IATC claim has merit, or whether the claim is "adequate to deserve encouragement to proceed further." Miller-El v. Cockrell , 537 U.S. 322 , 336, 123 S.Ct. 1029 , 154 L.Ed.2d 931 (2003) (quoting Slack v. McDaniel , 529 U.S. 473 , 483, 120 S.Ct. 1595 , 146 L.Ed.2d 542 (2000) ). In considering whether Preston's IATC claim is substantial, we are guided by the two-part Strickland analysis, but we remain mindful that the "substantiality" inquiry "does not require full consideration of the factual or legal bases adduced in support of the claims." Id.

Preston's IATC claim is "adequate to deserve encouragement to proceed further." Id . As explained in greater detail below, trial counsel's performance fell below an objective standard of reasonableness, satisfying the performance prong of Strickland . There was merit to the Confrontation Clause objection, and there was no discernible strategic reason why trial counsel would refrain from making the objection-counsel did, after all, make an objection based on the Pennsylvania Rules of Evidence. With respect to the prejudice prong of Strickland as it might have been envisioned in Martinez , the Martinez Court does not address it, other than to say at the conclusion of the opinion that the court of appeals "did not address the question of prejudice." Id. at 18, 129 S.Ct. 1231 . It would seem that, in light of the relatively light "substantiality" test regarding the merits of the IATC claim, a strict prejudice analysis for Martinez purposes would be misplaced. Indeed, the Ninth Circuit Court of Appeals addressed this issue and reasoned that if a petitioner "were required to show prejudice, in the ordinary Strickland sense," at the Martinez stage, "this would render superfluous the ... Martinez requirement of showing that the underlying Strickland claims were 'substantial'-that is, that they merely had 'some merit.' " 740 F.3d at 1246 (quoting Martinez , 566 U.S. at 14 , 132 S.Ct. 1309 ). In other words, a somewhat relaxed prejudice analysis, in the Detrich court's eyes, *378 was "necessary to harmonize" the various Martinez requirements. Id.

It could be that the need for a showing of prejudice at the Martinez stage might rise and fall depending upon the strength of the IATC claim. Here, where counsel's performance in failing to assert the Confrontation Clause claim seems clearly substandard under the first prong of Strickland , we need not concern ourselves with the prejudice prong of Strickland in order to satisfy Martinez and excuse the procedural default of the IATC claim. Were the substandard performance not so clear, we might require more of a showing of harm before letting the case advance to a full-blown Strickland analysis.

B. Preston's IATC claim fails under Strickland .

Although he can overcome the procedural default of his IATC claim under Martinez , Preston's IATC claim cannot provide cause to excuse the procedural default of his underlying Confrontation Clause claim unless trial counsel's performance was constitutionally ineffective. See Edwards , 529 U.S. at 451, 120 S.Ct. 1587 ("Not just any deficiency in counsel's performance will do, however; the assistance must have been so ineffective as to violate the Federal Constitution. In other words, ineffective assistance adequate to establish cause for the procedural default of some other constitutional claim is itself an independent constitutional claim." (citation omitted) ). Thus, Preston must demonstrate that trial counsel was constitutionally ineffective for failing to raise a Confrontation Clause objection to the admission of Leonard's prior statements at trial under the two-pronged test established in Strickland . 14

1. Preston satisfies Strickland 's performance prong.

Under Strickland' s performance prong, we ask whether counsel's performance clearly fell below an objective standard of reasonableness.

*379 Strickland , 466 U.S. at 688 , 104 S.Ct. 2052 . Preston's IATC claim centers upon trial counsel's failure to raise a Confrontation Clause objection to the admission of Leonard's prior statements. Because "counsel cannot be deemed ineffective for failing to raise a meritless claim," Ross v. Dist. Att'y of the Cty. of Allegheny , 672 F.3d 198 , 211 n.9 (3d Cir. 2012) (quoting Werts v. Vaughn , 228 F.3d 178 , 202 (3d Cir. 2000) ), we must consider whether a Confrontation Clause objection would have been meritless.

Over fifty years ago, the Supreme Court held that the Confrontation Clause barred the use of a witness's prior statement when the witness refused to answer questions on cross-examination. Douglas v. Alabama , 380 U.S. 415 , 85 S.Ct. 1074 , 13 L.Ed.2d 934 (1965). In Douglas's trial for assault, the state called as a witness a man who had been indicted along with Douglas and found guilty in a separate trial. Douglas , 380 U.S. at 416 , 85 S.Ct. 1074 . The witness was concerned that his testimony would negatively impact his own criminal proceedings. Id. Although the trial court ruled that the witness did not have a valid claim of Fifth Amendment privilege, the witness refused to answer any questions on direct- or cross-examination. Id. The prosecutor was permitted to introduce portions of a written confession previously signed by the witness, which implicated Douglas in the assault. Id. at 416-17 , 85 S.Ct. 1074 .

The Supreme Court held that Douglas had been denied the "right of cross-examination secured by the Confrontation Clause." Id. at 419 , 85 S.Ct. 1074 . "Although the [prosecutor's] reading of [the witness's] alleged statement, and [the witness's] refusals to answer, were not technically testimony, ... [the witness's] reliance upon the privilege created a situation in which the jury might improperly infer both that the statement had been made and that it was true." Id. Because these inferences "could not be tested by cross-examination[,]" use of the witness's prior statement violated Douglas's rights under the Confrontation Clause. Id.

Since Douglas , at least two Circuit Courts of Appeals have also held that the use of a witness's prior statement violates a defendant's rights under the Confrontation Clause when the witness refuses to answer questions on cross-examination. See United States v. Fiore , 443 F.2d 112 (2d Cir. 1971) ; United States v. Torrez-Ortega, 184 F.3d 1128 (10th Cir. 1999). We adopt the reasoning of the Supreme Court and our sister Circuit Courts of Appeals and conclude that the use of a witness's prior statement against a criminal defendant violates the defendant's Confrontation Clause rights when the witness refuses to answer any substantive questions on cross-examination. 15

*380 "The Confrontation Clause provides two types of protections for a criminal defendant: the right physically to face those who testify against him, and the right to conduct cross-examination." Pennsylvania v. Ritchie , 480 U.S. 39 , 51, 107 S.Ct. 989 , 94 L.Ed.2d 40 (1987). The constitutionally-guaranteed right to cross-examination "is a functional right that promotes reliability in criminal trials," Lee v. Illinois , 476 U.S. 530 , 540, 106 S.Ct. 2056 , 90 L.Ed.2d 514 (1986), and "reflects a judgment" that the reliability of a witness's testimony is best determined by testing in the "crucible of cross-examination," Crawford v. Washington , 541 U.S. 36 , 61, 124 S.Ct. 1354 , 158 L.Ed.2d 177 (2004). A criminal defendant's right to cross-examine the witnesses against him applies not only to in-court testimony but also to out-of-court statements introduced at trial. 16 Crawford , 541 U.S. at 50-51 , 124 S.Ct. 1354 . Therefore, "a witness whose prior statement is to be used must not only be produced but must also be sworn and made available for cross-examination." United States ex rel. Thomas v. Cuyler , 548 F.2d 460 , 463 (3d Cir. 1977).

A criminal defendant's right to cross-examination is not satisfied simply because a witness appears and takes the stand at the defendant's trial. A criminal defendant is also entitled to a " full and fair opportunity to probe and expose the[ ] infirmities" of the witness's testimony. Fensterer , 474 U.S. at 22 , 106 S.Ct. 292 ; see also Owens , 484 U.S. at 562 , 108 S.Ct. 838 (a defendant must have an opportunity for "meaningful" cross-examination); Kentucky v. Stincer , 482 U.S. 730 , 739, 107 S.Ct. 2658 , 96 L.Ed.2d 631 (1987) (the Confrontation Clause guarantees an opportunity to conduct "effective" cross-examination). A full and fair opportunity to test the veracity of a witness's statement through cross-examination is particularly important when the witness is the defendant's accomplice or co-conspirator. The "truthfinding function of the Confrontation Clause is uniquely threatened when an accomplice's confession is sought to be introduced against a criminal defendant without the benefit of cross-examination." Lee , 476 U.S. at 541 , 106 S.Ct. 2056 . This reflects a "reality of the criminal process, namely, that once partners in crime recognize that the 'jig is up,' they tend to lose any identity of interest and immediately become antagonists, rather than accomplices." Id. at 544-45 , 106 S.Ct. 2056 .

We cannot conclude that Preston had a "full and fair opportunity to probe and expose" the infirmities of Leonard's statements through "meaningful" and "effective" cross-examination. Owens , 484 U.S. at 562 , 108 S.Ct. 838 ; Stincer , 482 U.S. at 739 , 107 S.Ct. 2658 ; Fensterer , 474 U.S. at 22 , 106 S.Ct. 292 . Leonard, concerned that answering questions would jeopardize his own criminal appeal, responded "no comment" to nearly every question defense counsel asked him. See Owens , 484 U.S. at 561-62 , 108 S.Ct. 838 ("Ordinarily a witness is regarded as 'subject *381 to cross-examination' when he is placed on the stand, under oath, and responds willingly to questions.... [A]ssertions of privilege by the witness may undermine the process to such a degree that meaningful cross-examination ... no longer exists."); Cuyler , 548 F.2d at 463 ("A witness who refuses to be sworn or to testify at all or one who, having been sworn, declines to testify on Fifth Amendment grounds, has not been ... made available for cross-examination" (citing Douglas , 380 U.S. 415 , 85 S.Ct. 1074 , 13 L.Ed.2d 934 ; Fiore , 443 F.2d 112 ) (internal citations omitted) ). Without a full and fair opportunity to cross-examine Leonard, the admission of Leonard's prior statements violated Preston's rights under the Confrontation Clause. 17 The lack of opportunity to effectively cross-examine a witness is particularly problematic where, as here, the witness was the defendant's accomplice. Leonard's statements, made after the "jig was up," were inherently suspect and should have been subject to the crucible of cross-examination.

The Magistrate Judge reasoned, and Appellees argue, that Preston's right to cross-examine Leonard was not violated because "there were no legal or court-imposed restrictions on the scope or nature of Preston's questioning of Leonard." Br. for Appellees at 37. Restricting the scope or nature of cross-examination violates a defendant's rights under the Confrontation Clause. See, e.g. , Delaware v. Van Arsdall , 475 U.S. 673 , 106 S.Ct. 1431 , 89 L.Ed.2d 674 (1986) ; Davis v. Alaska , 415 U.S. 308 , 94 S.Ct. 1105 , 39 L.Ed.2d 347 (1974). However, this is not the only way in which a defendant's Confrontation Clause rights may be violated. "The cases that have arisen under the Confrontation Clause ... fall into two broad, albeit not exclusive, categories: 'cases involving the admission of out-of-court statements and cases involving restrictions imposed by law or by the trial court on the scope of cross-examination.' " Stincer , 482 U.S. at 737 , 107 S.Ct. 2658 (quoting Fensterer , 474 U.S. at 18 , 106 S.Ct. 292 ). Confrontation Clause claims like Preston's, which fall into the first category, are no less valid than those in the second category. Id.

It is of no consequence that Leonard answered "yes" to three of defense counsel's questions; those questions were not pertinent to the veracity of Leonard's prior statements, his testimony on direct-examination, or his credibility in general. We also reject the notion that Preston's Confrontation Clause right to cross-examination was satisfied because Leonard provided limited answers on direct-examination and because defense counsel was supposedly *382 able to "exploit" those statements in his closing argument. Br. for Appellees at 40, 43. It is possible that, in some circumstances, a witness's answers on direct examination may provide the jury with enough information to reach a credibility determination and therefore satisfy the Confrontation Clause. 18 However, neither direct examination nor a creative closing argument was a substitute for cross-examination in this case.

In short, the admission of Leonard's prior statements violated Preston's rights under the Confrontation Clause. Nonetheless, counsel failed to raise a Confrontation Clause objection at trial. Appellees have not provided any strategic explanation for trial counsel's failure to do so. Nor are we able to identify one. Thus, trial counsel's performance was ineffective under the first prong of Strickland .

2. Preston fails to satisfy Strickland 's prejudice prong.

Next, under Strickland 's prejudice prong, we ask if there is "a reasonable probability that, but for counsel's unprofessional errors, the result of the proceeding would have been different." Strickland , 466 U.S. at 694 , 104 S.Ct. 2052 . The prejudice prong of the Strickland analysis is consistent with the general "harmless error" standard applicable to all federal habeas petitioners alleging non-structural errors. See Johnson v. Lamas , 850 F.3d 119 , 132 (3d Cir. 2017) ("To be entitled to habeas relief, a habeas petitioner must establish that the trial error 'had [a] substantial and injurious effect or influence in determining the jury's verdict.' " (alteration in original) (quoting Brecht v. Abrahamson , 507 U.S. 619 , 637, 113 S.Ct. 1710 , 123 L.Ed.2d 353 (1993) ) ). Given the other evidence introduced at trial, we cannot conclude that there is a reasonable probability that the result of the proceeding would have been different if Leonard's prior statements had not been admitted. Stated in terms of the harmless error standard, we conclude that the admission of Leonard's statements did not have a substantial and injurious effect or influence in determining the jury's verdict.

First, the content of Leonard's statements was largely cumulative of other evidence. It was nearly identical to Butler's testimony, which also implicated Preston. Preston argues that without Leonard's corroborating testimony, the jury would have found Butler's testimony unreliable. This argument is not supported by the record. Butler's testimony was corroborated by the medical examiner's testimony as well as the physical evidence recovered from the scene. It also matched the statements Butler gave to police in the immediate aftermath of the shooting. Moreover, Preston himself largely corroborated Leonard's and Butler's version of events. Nor does Butler's testimony contradict that of Stanfield or Malloy, both of whom testified that they could not see who fired the shot.

Preston places much weight on Stanfield's and Malloy's testimony, suggesting that Butler did not turn the corner, and therefore did not see the shooting, until *383 after the shot was fired. However, Preston fails to explain how Butler could have manufactured a version of events that matched Leonard's and Preston's versions of events, the physical evidence, and the medical examiner's conclusions and provided that version of events to police immediately after the shooting if she had not seen the events herself. This argument also assumes that the jury considered Stanfield and Malloy credible witnesses. Yet their testimony was marred by several major inconsistencies. For example, Stanfield testified that Leonard drove his car down Dennie Street and parked on Wayne Avenue before engaging with Williams, while every other eyewitness testified that Leonard followed Williams down Dennie Street and onto Wayne Avenue on foot. Malloy testified that the three men were fighting on the sidewalk, while every other eyewitness and the bullet recovered from the scene indicated that the fight occurred on the street between cars. Malloy's suggestion that Williams shot himself was also contradicted by the medical examiner's conclusion.

Ultimately, neither Stanfield nor Malloy cast serious doubt on Butler's ability to witness the relevant events either. According to Butler, she was at the "corner of Dennie and Wayne" when she first saw Leonard and Preston fighting with Williams. JA523. Neither Stanfield nor Malloy called that into question, and they did not cast doubt on Butler's ability to see the fight from the corner. Instead, Stanfield said that he, personally did not see Butler until after the shot, when she came around the corner from Dennie Street. Similarly, Malloy merely said that he did not notice Butler until she came running around the corner. These answers do virtually nothing to impeach Butler's testimony.

Second, aside from their cumulativeness, Leonard's statements were not as damning as Preston suggests. Leonard said he did not see Preston with a gun and could only "guess" that Preston was the shooter. JA601. The jury was also instructed to view Leonard's testimony with disfavor, since "an accomplice when caught will often try to place the blame on someone else [and] may even testify falsely in the hope of obtaining a favorable result." JA723.

Finally, even if, absent Leonard's testimony, the jury would have concluded that Leonard, and not Preston, was the shooter, there is not a reasonable probability that the jury would have reached a different verdict. The jury was properly instructed on accomplice liability and told that Preston could be found guilty of third degree murder if he was the accomplice of another person who caused the death of Williams with an intent to inflict serious bodily injury. Even if the jury had concluded that Leonard was the shooter, the evidence fully supported a finding that Preston was Leonard's accomplice and was therefore also guilty of third degree murder.

Because trial counsel's failure to object to the admission of Leonard's prior statements does not meet the second Strickland prong, Preston cannot use his IATC claim to overcome the procedural default of his underlying Confrontation Clause claim. Therefore, we are unable to grant him habeas relief.

III. CONCLUSION

For the foregoing reasons, we affirm the District Court's order dismissing Preston's habeas petition.