"Michael Gerard" ""Mike"" "Tyson" is an United States/American retired professional Boxing/boxer. Tyson is a former List of undisputed boxing champions#Heavyweight/undisputed heavyweight champion of the world and holds the record as the youngest boxer to win the World Boxing Council/WBC, World Boxing Association/WBA and International Boxing Federation/IBF heavyweight titles at 20 years, 4 months, and 22 days old. Tyson won his first 19 professional bouts by knockout, 12 of them in the first round. He won the WBC title in 1986 after defeating Trevor Berbick by a Technical knockout/TKO in the second round. In 1987, Tyson added the WBA and IBF titles after defeating James Smith (boxer)/James Smith and Tony Tucker. He was the first heavyweight boxer to simultaneously hold the WBA, WBC and IBF titles, and the only heavyweight to successively unify them.

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