Evander Holyfield vs. Michael Moorer II In an effort to unify the three titles, the WBA and IBF organizations announced a unification bout between Holyfield and Moorer set for November 8, 1997. The two men had previously fought each other on April 22, 1994 for Holyfield's WBA, IBF and "Lineal" Heavyweight championships. In a close fight, Moorer earned an upset victory over Holyfield to become the first southpaw to win a major Heavyweight title. However, his reign would not last long as he was defeated by 45-year-old George Foreman via 10th-round knockout in his first defense of the titles. Foreman, however, would eventually be stripped of
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