OPINION OF STATE'S PETITIONS FOR DISCRETIONARY REVIEW

CAMPBELL, Judge.

A jury found appellant, Melvin Leon Jackson, guilty of three counts of robbery. See Tex.Penal Code Sec. 29.02(a)(2). After appellant pleaded true to two enhancement allegations, the trial court assessed punishment at 55 years imprisonment. The Thirteenth Court of Appeals reversed, holding that appellant was denied his Sixth Amendment right to the effective assistance of counsel. Jackson v. State, 850 S.W.2d 834 (Tex.App. — Corpus Christi 1993). We granted the State's petitions for discretionary review, pursuant to Texas Rule of Appellate Procedure 200(c)(3), to determine whether the court of appeals erred in holding that appellant's trial counsel was ineffective due to his failure to challenge a venire member who eventually was seated on the jury.

The evidence at appellant's trial showed that, on three separate occasions in 1991, appellant entered a convenience store in Houston. On each occasion, appellant told the clerk he had a gun, filled a box with multiple cartons of cigarettes, and then left the store.

During voir dire, the trial judge asked the venire members whether any of them had been robbery victims. In response to the judge's question, venire member John Supinski stated that he had been the victim of a robbery. Supinski elaborated:

Someone broke into my house while we were sleeping. And I had a litter of Sheep puppydogs and they stole one of them. We were not actually confronted but that break-in while we were there —

After the trial judge explained the legal difference between a robbery and a burglary, the following exchange occurred between the judge and Supinski:

THE COURT: So my question to you is, would the fact of having an assailant in your home while you were asleep, is that going to impact on your impartiality in this trial?

Supinski: I would have to say it probably would.

Appellant's trial counsel did not challenge Supinski for cause, nor did he use a peremptory challenge against Supinski. As a result, Supinski eventually was seated on the jury, in the twelfth and last slot.

Another venire member, Helen Hartsfield, told the trial court:

I was involved in an armed robbery. I was held at gunpoint. So this is a sensitive issue for me.

The following exchange then occurred between the trial judge and Hartsfield:

THE COURT: So you're talking about the nature of the indictment is such that you don't feel that you would be fair in this case, though you would be fair in some other type of unrelated offense?

Hartsfield: Yes.

Appellant's trial counsel neither peremptorily struck Hartsfield nor challenged her for cause. However, because Hartsfield was situated 29th in the array of venire members, and because of duplicate strikes by appellant's trial counsel and the prosecutor, she missed being seated on the jury by one slot.

A third venire member, Kathleen Deltoro, told the trial court that her car had been stolen and that her father's car had been stolen at gunpoint. In response, the trial court asked Deltoro whether those incidents might impact her impartiality as a juror. Deltoro's first response was equivocal. When pressed for a "yes" or "no" answer, she replied:

To be fair to [appellant], I'd have to say no then, because it was pretty recent that it happened.

Appellant's trial counsel later questioned Deltoro about the incidents which she had related to the trial court, and asked her whether she could be fair and impartial in spite of them. Upon asking her that question, appellant's trial counsel was reminded by the trial court that Deltoro had previously stated that she would not be able to be fair and impartial. Deltoro was later removed for cause, although the record does not indicate whether she was removed upon motion of one of the parties, or whether the trial court removed her sua sponte.

The court of appeals held that the failure of appellant's trial counsel "to strike jurors who expressed bias that weighed against appellant, coupled with the impaneling of [Supinski]," rendered his assistance ineffective under the Sixth Amendment. The court of appeals cited the relevant test for determining claims of ineffective assistance, that found in Strickland v. Washington, 466 U.S. 668, 104 S.Ct. 2052, 80 L.Ed.2d 674 (1984). After citing Strickland, however, the court of appeals stated that "[t]he thought occurs to us that perhaps we have so often used these standards to judge ineffective assistance of counsel claims that we have come to regard these as pegs to hang our hats on in our hesitance to find representation to be ineffective." Jackson v. State, 850 S.W.2d at 837. The court of appeals then stated that "there is such a thing as 'ineffective assistance of counsel' and, while we should tread softly in finding it to exist . . . we should adopt an attitude expressed by one United States Supreme Court justice who observed concerning obscenity, 'I can't define it but I know it when I see it.' " Id. at 837-38.

The court of appeals also distinguished Delrio v. State, 840 S.W.2d 443 (Tex.Crim.App. 1992), in which we held that a trial counsel's assistance was not ineffective when he failed to strike or challenge, in a trial for cocaine possession, an ex-narcotics officer who knew the defendant and stated that he could not be impartial. The court of appeals cited as distinguishing characteristics of Delrio the fact that the unchallenged venire member and the defendant in that case were of the same race, and the possibility that, as an ex-narcotics officer, the unchallenged venire member might have been more favorable toward the defendant in assessing punishment.

The State now argues, in its petition for discretionary review, that the court of appeals erred in its analysis of appellant's ineffective assistance claim. The State argues that the court of appeals misapplied Strickland. Specifically, the State argues that the court of appeals improperly shifted the burden of proof for demonstrating ineffective assistance from appellant to the State, by requiring "the State to establish a valid strategic decision [for not striking venire member Supinski], rather than requiring the defense to show the lack of one." The State also argues that the court of appeals improperly distinguished the instant case from Delrio.

The State Prosecuting Attorney argues that the court of appeals essentially abandoned the Strickland test in favor of the "amorphous 'standard' of 'I can't define it but I know it when I see it.' " The State Prosecuting Attorney also argues that the court of appeals misapplied Delrio in distinguishing it from the instant case. Finally, the State Prosecuting Attorney argues, like the District Attorney, that the court of appeals placed the burden for showing ineffective assistance on the wrong party.

The proper standard for determining claims of ineffective assistance under the Sixth Amendment is the standard adopted by

the United States Supreme Court in Strickland. We adopted the Strickland standard in Hernandez v. State, 726 S.W.2d 53 (Tex.Crim.App. 1986). In Strickland, the Supreme Court adopted a two-pronged analysis for claims of ineffective assistance. Under the first prong, the defendant must show that counsel's performance was deficient, to the extent that counsel failed to function as the "counsel" guaranteed by the Sixth Amendment. Strickland, 466 U.S. at 687, 104 S.Ct. at 2064. Under the second prong, the defendant must show that counsel's deficient performance prejudiced the defense. Id. To show prejudice, "[t]he defendant must show that there is a reasonable probability that, but for counsel's unprofessional errors, the result of the proceeding would have been different. A reasonable probability is a probability sufficient to undermine confidence in the outcome." Id. at 694, 104 S.Ct. at 2068. Under the Strickland test, the defendant bears the burden of proving ineffective assistance. In addition, when reviewing a claim of ineffective assistance, "a court must indulge a strong presumption that counsel's conduct falls within the wide range of reasonable professional assistance; that is, the defendant must overcome the presumption that, under the circumstances, the challenged action 'might be considered sound trial strategy.' " Id. at 689, 104 S.Ct. at 2065.

We held in Delrio that a trial counsel's failure to challenge a venire member who had voiced his lack of impartiality did not constitute ineffective assistance under Strickland. 840 S.W.2d 443. In Delrio, the venire member, Johnny Martinez, told the trial court that he was an ex-narcotics officer, and that he knew the defendant, who was on trial for a drug offense, from his work as a narcotics officer. Martinez then told the trial court that he could not be impartial in the defendant's trial. Defense counsel, however, failed to challenge Martinez for cause and then failed to use a peremptory challenge against him. We speculated as to why defense counsel may have refused to remove Martinez from the venire, mentioning the possibility that defense counsel may have sought to keep Martinez because he and the defendant were both Hispanic, and that defense counsel may have thought that Martinez, as an ex-narcotics officer, might be more lenient in assessing punishment. Noting that the record was silent as to the reasons for defense counsel's decision not to challenge Martinez, and citing the strong presumption in Strickland against a finding of ineffective assistance, we determined the record insufficient to overcome that presumption.

The record in the instant case is also silent as to why appellant's trial counsel failed to challenge venire member Supinski. We could speculate as to why appellant's trial counsel decided not to challenge or strike Supinski, as we did in Delrio, but there is no need to do so. The speculations we offered in Delrio were not material to our determination that counsel in that case had not been proven ineffective. To hold trial counsel's decision not to strike or challenge venire member Supinski in the instant case as ineffective assistance would also call for speculation. The record in the instant case lends no support for such holding.

The first prong of Strickland is not met in the instant case. Due to the lack of evidence in the record concerning trial counsel's reasons for not challenging or striking venire member Supinski, we are unable to conclude that appellant's trial counsel's performance was deficient. "Consistently with Strickland, we must presume that counsel is better positioned than the appellate court to judge the pragmatism of the particular case, and that he 'made all significant decisions in the exercise of reasonable professional judgment.' " Delrio, 840 S.W.2d at 447. The record in the instant case contains no evidence to rebut that presumption

The court of appeals erred in distinguishing Delrio from the instant case based on the speculations we offered in Delrio. Those speculations were not material to our holding in that case. Delrio is controlling precedent in the instant case.

The court of appeals also erred in ignoring the strong presumption mandated by Strickland in favor of a determination that counsel's decision "might be considered sound trial strategy." Strickland, 466 U.S. at 689, 104 S.Ct. at 2065. Additionally, the actions of appellant's trial counsel regarding venire members Hartsfield and Deltoro are not material to our determination of whether appellant's trial counsel was ineffective, since neither were seated on the jury.

Finally, the court of appeals erred in incorporating into its analysis the principle, "I can't define it but I know it when I see it." The two-pronged standard for claims of ineffective assistance promulgated by the Supreme Court in Strickland is clear and well-articulated, and we adopted this standard in Hernandez. We see no reason to depart from or revisit that standard.

We conclude that appellant has not met his burden of showing that his trial counsel's assistance was ineffective. The record is insufficient to support the conclusion reached by the court of appeals. We hold that the court of appeals erred in its application of the Strickland standard, and we REVERSE the judgment of that court and AFFIRM the judgment of the trial court.