Mike Tyson
Mike Tyson became a professional boxer in 1985 and won a heavyweight title from Trevor Berbick in 1986. He was the youngest man to win a heavyweight title belt. He became recognized as the undisputed champion when he beat Tony Tuker in 1987. His 91-second obliteration of Michael Spinks in 1988 was the zenith of his boxing fame and ability. He lost his title to Buster Douglas in 1990. Tyson won his first 19 professional bouts by knockout, 12 of them in the first round.