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
Boxing at the 2000 Summer Olympics – Super heavyweight Boxing at the 2000 Summer Olympics – Super heavyweight The men's super heavyweight boxing competition at the 2000 Olympic Games in Sydney was held from 23 September to 1 October at the Sydney Convention and Exhibition Centre. Being the heaviest class, super heavyweights were limited to those boxers weighing over 91 kilograms (200.6 pounds). Like all Olympic boxing events, the competition was a straight single-elimination tournament. This event consisted of 16 boxers who have qualified for the competition through various qualifying tournaments held in 1999 and 2000. The competition began with a preliminary round on 23 September, where the number