I concur in affirming the judgment as to count I and in the majority’s determination on all the issues except defendant’s contention it was error to substitute a new juror after the original jury had reached a verdict on count I. On that issue I dissent. I would hold that where, as here, the facts the jury necessarily found in reaching a verdict on the first count are essentially the same facts the jury must find on the second count it is error to substitute a new juror after a verdict on the first count.
Defendant raises an issue of first impression in California: whether it is proper in a criminal case to substitute a juror after a verdict on one count has been returned and allow the reconstituted jury to reach a verdict on the remaining counts.1
The discretion of trial courts to substitute jurors is governed by Penal Code section 1089 which provides in relevant part: “If at any time, whether before or after the final submission of the case to the jury, a juror dies or becomes ill, or upon other good cause shown to the court is found to be unable to perform his duty, or if a juror requests a discharge and good cause appears therefor, the court may order him to be discharged and draw the name of an alternate, who shall then take his place in the jury box, and be subject to the same rules and regulations as though he had been selected as one of the original jurors.” (Italics added.)
The constitutionality of section 1089 was challenged in People v. Collins (1976) 17 Cal.3d 687, 693 [131 Cal.Rptr. 782, 552 P.2d 742] on the ground it violated a criminal defendant’s right to the unanimous verdict of 12 persons as guaranteed by the California Constitution, article I, section 16. The court agreed section 1089 would be unconstitutional if construed to deny the defendant a verdict on which all the jurors had fully deliberated.
“The requirement that 12 persons reach a unanimous verdict is not met unless those 12 reach their consensus through deliberations which are the common experience of all of them. . . . [A] defendant may not be convicted except by 12 jurors who have heard all the evidence and argument and who together have deliberated to unanimity.” (17 Cal.3d at p. 693.) The court held, however, “a proper construction of section 1089 requires that *216deliberations begin anew when a substitution is made after final submission to the jury. . . . We accordingly construe section 1089 to provide that the court instruct the jury to set aside and disregard all past deliberations and begin deliberating anew.” (Id. at p. 694.)
In Collins and subsequent cases the Court has emphasized the constitutionality of substituting a new juror after deliberations have commenced rests on the presumption the new juror will participate fully in the jury’s deliberation. “It is not enough that 12 jurors reach a unanimous verdict if 1 juror has not had the benefit of the deliberations of the other 11. Deliberations provide the jury with the opportunity to review the evidence in light of the perception and memory of each member. Equally important in shaping a member’s viewpoint are the personal reactions and interactions as any individual juror attempts to persuade others to accept his or her viewpoint. The result is a balance easily upset if a new juror enters the decision-making process after the 11 others have commenced deliberations. The elements of number and unanimity combine to form an essential element of unity in the verdict.” (People v. Collins, supra, 17 Cal.3d at p. 693; see also Griesel v. Dart Industries, Inc. (1979) 23 Cal.3d 578, 583-584 [153 Cal.Rptr. 213, 591 P.2d 503]; People v. Odle (1988) 45 Cal.3d 386, 405 [247 Cal.Rptr. 137, 754 P.2d 184].) Thus, it is error to instruct the reconstituted jury to “continue your consideration of the case” or imply the new juror need only be brought “ ‘up to speed’ on what matters have already been discussed and possibly decided.” (Griesel v. Dart Industries, Inc., supra, 23 Cal.3d at p. 583, fn. 3; People v. Odle, supra, 45 Cal.3d at p 405.)2
Since the Collins decision, no California case has ruled on the situation presented here in which the original jury not only commenced deliberations but reached a verdict on a related count prior to the substitution of a new juror.
The closest case on point is People v. Fields (1983) 35 Cal.3d 329 [197 Cal.Rptr. 803, 673 P.2d 680] in which the court, in dictum, recognized the constitutional problem that would arise if an alternate joins the jury after it has reached a verdict. The defendant, in Fields, claimed excluding persons who would automatically vote against the death penalty from the guilt phase of his murder trial denied those persons equal protection of the law. The court rejected the equal protection claim on the ground the interest of the state in maintaining a unitary jury for both phases of the trial is *217sufficient to justify the exclusion of death penalty foes from the guilt phase. (Id. at pp. 352-353.) In explaining why the state had a legitimate interest in maintaining a unitary jury, the court pointed out a new constitutional problem would arise if jurors opposed to the death penalty were allowed to serve during the guilt phase and then replaced by alternates at the commencement of the penalty phase.
“We held in People v. Collins . . . that if necessary an alternate juror could join the jury after deliberations had begun, but that the jury must be instructed to disregard all past deliberations and begin anew. The proposal before us, however, envisions an alternate joining the jury after it had deliberated on the issues of guilt and special circumstances and reached a verdict. He would be joining a group which has already discussed and evaluated the circumstances of the crime, the capacity of the defendant, and other issues which bear both on guilt and on penalty. The resulting deliberations between old members who have already considered the evidence and may have arrived at tentative conclusions on some aspects of the case, and new members ignorant of those discussions and conclusions, would depart from the requirement that jurors ‘reach their consensus through deliberations which are the common experience of all of them.’ ” (35 Cal.3d at p. 351, citations omitted.)
The majority ignores this language from Fields and, instead, quotes the footnote that follows it. (Maj. opn., supra, p. 212, fn. 3.) The footnote in Fields does not approve the substitution of an alternate juror under the facts of the case before us. As previously noted, supra, page 215, footnote 1, the case of People v. Green, cited in the Fields footnote, did not involve the situation in Fields, the substitution of a juror at the penalty phase of the trial, nor did it involve the situation in our case where a juror is substituted after the original jury has returned a verdict on a closely related count.
The New Jersey Supreme Court has addressed the identical issue presented in the case before us and, relying in part on Collins, held it was error to substitute a juror after the return of verdicts on some counts in order to reach verdicts on the remaining counts when there is a factual overlap between the counts. (State v. Corsaro (1987) 107 N.J. 339 [526 A.2d 1046].) I believe the reasoning in Corsaro is consistent with the reasoning in People v. Collins and that it should be followed in California.
Defendants in State v. Corsaro were tried on various gambling charges. Before the juror substitution, the original jury convicted two of the defendants of maintaining a gambling resort, one defendant of promoting gambling and defendant Corsaro of possession of gambling records. The remaining counts charged defendant Corsaro with promoting gambling and all *218defendants with conspiracy to promote gambling. (526 A.2d at pp. 1047-1048.) The verdicts of the original jury bore on the remaining counts because those convictions could have established the overt act requirement for the conspiracy count and the conviction of Corsaro for possession of gambling equipment was a “ ‘strong, perhaps irresistible pull’ toward her conviction for ‘promoting gambling.’ ” (526 A.2d at p. 1054.)
The New Jersey statute on substitution of jurors is similar to Penal Code section 1089. It provides in relevant part, “[I]f at any time after submission of the case to the jury, the juror dies or a juror is discharged by the court because he is ill or otherwise unable to continue, the court may direct the clerk to draw the name of an alternate juror to take the place of the juror who is deceased or discharged. When such a substitution of an alternate juror is made, the court shall instruct the jury to recommence deliberations and shall give the jury such other supplemental instructions as may be appropriate.” (Quoted in State v. Corsaro, supra, 526 A.2d at p. 1052.) The New Jersey high court, like California’s, has imposed a construction on the statute requiring “ ‘the jury must be instructed in clear and unequivocal terms that it is to begin its deliberations anew’ ” not simply pick up from where they left off before the substitution. {Ibid.) The trial court in Corsaro, like the trial court in the case before us, gave the reconstituted jury an instruction which arguably at least complied with state decisional law. It instructed the jury, “you are to begin your deliberations anew with respect to the open charges that you are considering . . . .” {Id. at p. 1050.)
The problem in Corsaro was not in the wording of the instruction. (526 A.2d at p. 1053.) The problem in Corsaro, as in the case at bar, was that the original jurors had gone beyond deliberations and actually announced verdicts. (Id. at pp. 1053-1054.) The court concluded it would be unreasonable and untenable to presume the original 11 jurors would follow an instruction to disregard the findings of fact reflected in their existing verdicts and start from scratch with the new juror. (Cf. People v. Fields, supra, 35 Cal.3d at p. 351.)
In reaching this conclusion the Corsaro court interpreted People v. Collins to mean a “verdict does not satisfy the constitutional requirement of unanimity if the new juror does not have the benefit of the deliberations of the original 11, is pressured to conform to the views of the original 11 and has no meaningful chance to persuade the others to accept his or her viewpoint.” (State v. Corsaro, supra, 526 A.2d at pp. 1052-1053, citing People v. Collins, supra, 17 Cal.3d at p. 693.) The Corsaro court then explained why a verdict by a reconstituted jury, after the original jury had reached a related verdict, cannot meet the requirement of unanimity.
*219“[W]here the deliberative process has progressed for such a length of time or to such a degree that it is strongly inferable that the jury has made actual fact-findings or reached determinations of guilt or innocence, the new juror is likely to be confronted with closed or closing minds. In such a situation, it is unlikely that the new juror will have a fair opportunity to express his or her views and to persuade others. Similarly, the new juror may not have a realistic opportunity to understand and share completely in the deliberations that brought the other jurors to particular determinations, and may be forced to accept findings of fact upon which he or she has not fully deliberated.” (526 A.2d at p. 1054.)
In the case at bar, it is reasonable to assume the original jury chose to believe the prosecution witnesses over those for the defense in convicting defendant of assault on Leonard Clark. The jury necessarily found that defendant was present at the scene while the melee was still going on and that it was he who struck Leonard Clark with a baseball bat. It necessarily disbelieved defendant’s testimony he arrived at the scene after the assault on Leonard and Patricia Clark had taken place and the testimony of witnesses who stated it was defendant’s sister who struck Leonard Clark with the bat.
It is entirely unreasonable to presume that having finalized those findings of fact in the form of a guilty verdict as to count I, the remaining 11 members of the original jury would be willing, much less able, to put those findings aside and consider the facts anew, including in their deliberation the perception, memory and viewpoint of the new juror. (See People v. Collins, supra, 17 Cal.3d at p. 693; State v. Corsaro, supra, 526 A.2d at p. 1054.) What is more, it is a virtual certainty they did not do so in the 45 minutes they deliberated on count II. While the findings of fact underlying the guilty verdict on count I did not necessarily compel a guilty verdict as to count II, they were a “strong, perhaps irresistible gravitational pull” toward such a verdict. (State v. Corsaro, supra, 526 A.2d at p. 1054.)3
*220I recognize dicta in People v. Collins and Griesel v. Dart Industries express our Supreme Court’s view an instruction to the reconstituted jury to disregard all past deliberations and begin anew is sufficient to guarantee the defendant a unanimous verdict. (See Collins, supra, 17 Cal.3d at p. 694; Griesel, supra, 23 Cal.3d at p. 583, fn. 2.) But, in those cases the court was speaking about setting aside deliberations not determinations. As the Corsaro court correctly observed,
“The requirement that juries begin deliberations anew after a juror has been substituted would be rendered nugatory if the reconstituted jury is likely to accept, as conclusively established, facts that could underlie, if not necessarily establish, its verdict on the open charges. . . . While the jury was not technically required to accept the facts underlying the partial verdict, the likelihood that deliberations would truly ‘begin anew’ was so remote, in our opinion, as to foreclose juror substitution.” (State v. Corsaro, supra, 526 A.2d at p. 1055.)
Submitting count II to the reconstituted jury was prejudicial to the defendant because it is reasonably probable a jury not influenced by its previous findings of fact and, perhaps, the opinions and feelings of the juror who was discharged would have returned a more favorable verdict. This was a close case on the facts. The victims were injured in a neighborhood brawl featuring a baseball bat. The fight took place at night on a dark street, the nearest street light being two blocks away. Participants on both sides had control of the bat during the melee and used it. Not surprisingly there was much conflict in the testimony of the witnesses. They not only disputed each other; they contradicted themselves as well. One of the prosecution’s own witnesses testified she was “positive” defendant had not struck Patricia Clark, the victim named in count II.
I am not persuaded by the majority’s in terrorem argument on the effects of adopting the view expressed in this dissent. (Maj. opn., supra, p. 214.) First of all, as the majority admits, the situations in which a juror is excused after the jury has reached a verdict on some counts are exceedingly rare. (See maj. opn., supra, p. 211.) Thus, the view I express, even if it applied to every such situation, would have an insignificant effect on the number of mistrials occurring in this state and clearly would not exacerbate the harm caused by mistrials as described by the majority. Second, I agree with the majority a mistrial should not result “automatically” every time a juror dies or is excused after the jury returns a verdict on one count. (See maj. opn., supra, p. 211.) I would not hold a new juror can never be substituted once the original jury has rendered a verdict on one charge. For example, a deliberation under Penal Code section 1025 to determine the truth of allegations of prior convictions would not seem to raise the problem raised in the *221case before us. I would hold only that such a substitution is not permitted where, as here, there is such an overlapping of facts among the counts the facts underlying the existing verdict could also underlie, if not necessarily establish, the verdict on a remaining charge.
Accordingly, I would affirm the conviction as to count I and reverse as to count II.
A petition for a rehearing was denied January 11, 1989. Johnson, J., was of the opinion that the petition should be granted. Appellant’s petition for review by the Supreme Court was denied March 29, 1989.
My research has disclosed two cases in which a juror was substituted after the original twelve jurors reached a guilty verdict. Neither case addressed the constitutional issue defendant raises in the case before us. In People v. Green (1971) 15 Cal.App.3d 524, 528 [93 Cal.Rptr. 84], the Court held substituting a juror to try the sanity phase of a case did not violate the provision of Penal Code section 1026 that the sanity issue be tried “either before the same jury or before a new jury.” In People v. Hamilton (1963) 60 Cal.2d 105, 126 [32 Cal.Rptr. 4, 383 P.2d 412], the court found it was error to excuse a juror during the penalty phase of a murder trial because there was no “good cause” shown for excusing her.
In the case before us, the trial court instructed the jury to “set aside and disregard all past deliberations as to count 2 and begin those deliberations anew.” Even assuming the instruction satisfied the requirement of Collins it did not address the problem in this case of separating the deliberations as to count 2 from the factual determinations by the original jury as to count 1.
The majority apparently believes no prejudice to the defendant arises if the reconstituted jury finds him guilty on a related count because it is probable the original jury would have reached the same result. (See, supra, p. 213.) This argument entirely misses the point. What the original jury would have done is irrelevant. Defendant was not convicted on count II by the original jury. He was convicted by a different jury and as to that jury he had the constitutional right “not to be convicted except by 12 jurors . . . . who together have deliberated to unanimity.” (People v. Collins, supra, 17 Cal.3d at p. 693.) Surely the majority does not mean to say it would have been harmless error not to impanel an alternate juror at all on the ground the verdict of the remaining 11 jurors is probably the same verdict the original 12 would have reached. Yet, this would appear to be the logical extension of the majority’s argument. Regardless of the court’s view about the probability of the outcome, a felony defendant cannot be compelled to accept a verdict by less than 12 jurors. (People v. Ames (1975) 52 Cal.App.3d 389, 392 [124 Cal.Rptr. 894]; cf. People v. Superior Court (1967) 67 Cal.2d 929, 932 [64 Cal.Rptr. 327, 434 P.2d 623, 25 A.L.R.3d 1143].)