Evander Holyfield vs. Michael Moorer II victory, rumors of the long-awaited unification match between Evander Holyfield and Lennox Lewis. After the Holyfield–Moorer II fight, Lewis would also pick up the "Lineal" Heavyweight championship by defeating Shannon Briggs, the man who had dethroned George Foreman to win the title. With both Holyfield and Lewis now holding all of the major titles, the highly anticipated unification bout looked like it might finally take place. Holyfield would make his mandatory defense against Vaughn Bean, defeating him via unanimous decision, while Lewis faced mandatory challenger Željko Mavrović, also winning his fight via unanimous decision. After these victories, the Holyfield–Lewis fight
Heavyweight unification series Heavyweight unification series The heavyweight unification series, also known as the Heavyweight World Series, was a sequence of professional boxing matches held in 1986 and 1987 to crown an undisputed champion of the heavyweight class. The series was produced by HBO Sports and promoted by Don King. It ended with Mike Tyson as undisputed champion, holding the championship belts of the International Boxing Federation, World Boxing Association, and World Boxing Council. Prior to the series, the last undisputed heavyweight champion had been Leon Spinks, who won the championship in his 1978 victory over Muhammad Ali. Spinks had been stripped of