Michael Spinks of his professional career. Spinks has been inducted into the International Boxing Hall of Fame and the World Boxing Hall of Fame. The International Boxing Research Organization and BoxRec rank Spinks among the ten greatest light heavyweights of all time. Spinks won the 1974 156-pound Golden Gloves Light Middleweight Championship by defeating Wilber Cameron in Denver, Colorado and then took the Silver Medal in the National AAU 165-pound Championship Competition in 1975, losing in three rounds to Tom Sullivan in Shreveport, Louisiana. He rebounded to take the 1976 National Golden Gloves Middleweight championship with a three-round victory over Lamont Kirkland
Michael Spinks a successful amateur career, which culminated in his Olympic gold medal win, Spinks went undefeated in his first 31 professional fights, beating such opponents as Dwight Muhammad Qawi, Eddie Mustafa Muhammad, Marvin Johnson and Eddie Davis en route to becoming the undisputed light heavyweight champion. Following ten successful title defenses, Spinks moved up to heavyweight, and as an underdog defeated long-reigning IBF heavyweight champion Larry Holmes; in doing so, Spinks became the first reigning light heavyweight world champion to win the heavyweight title. In his final fight, Spinks was knocked out by Mike Tyson in 91 seconds, the only defeat