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 – Heavyweight Boxing at the 2000 Summer Olympics – Heavyweight The men's heavyweight boxing competition at the 2000 Olympic Games in Sydney was held from 21 September to 30 September at the Sydney Convention and Exhibition Centre. Félix Savón became the third boxer to win three consecutive Olympic gold medals, along with his countryman Teofilo Stevenson, and Hungary's Laszlo Papp. Shortly after the victory ceremony, he announced his retirement. 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.