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
Riddick Bowe vs. Jesse Ferguson Riddick Bowe vs. Jesse Ferguson Riddick Bowe vs. Jesse Ferguson, billed as "The Heavyweight Debate", was a professional boxing match contested on May 22, 1993, for the WBA and "Lineal" Heavyweight championships. The fight took place in RFK Stadium in Washington, DC, was Bowe's second defense of the title he had won from Evander Holyfield in November 1992, and was the main event of a card that included a fight between Roy Jones, Jr. and Bernard Hopkins for the vacant IBF middleweight championship, which Jones won. Only three months prior, Riddick Bowe had made the first successful defense of his