Mike Tyson biography
Michael Gerard "Mike" Tyson (born June 30, 1966) is a retired American boxer. Tyson is a former undisputed heavyweight champion of the world and holds the record as the youngest boxer to win the WBC, WBA and IBF world heavyweight titles, he was 20 years, 4 months and 22 days old. Tyson won his first 19 professional bouts by knockout, with twelve of them occurring in the first round. He won the WBC title in 1986 after defeating Trevor Berbick by a TKO in the second round. In 1987, Tyson added the WBA and IBF titles after defeating James Smith and Tony Tucker. He was the first heavyweight boxer to simultaneously hold and only Heavyweight to individually unify the WBA, WBC and IBF titles.