Mike Tyson

 Michael Gerard Tyson (born June 30 1966) is an American former professional boxer who competed from 1985 until 2005. Nicknamed "Iron Mike"[4and "Kid Dynamite" in his early career, and later known as "The most infamous man on the Planet",[5"The Baddest Man on the Planet" Tyson is widely regarded as one of the greatest heavyweight boxers ever. [6] He reigned as the undisputed world heavyweight champion from 1987 to 1990. Tyson had his first 19 professional bouts via knockout, 12 of them within the first round. Tyson who was just 20 years old, 4 months, and 22 days old at the time he won his first heavyweight title holds the record as the youngest ever boxer to do so. 7 He was the first heavyweight boxer to be the holder of the WBA, WBC and IBF titles, as well as the only heavyweight who unifies these titles consecutively. The following year, Tyson became the lineal champion after he knocked out Michael Spinks in 91 seconds of the opening round. In the year 1990, Tyson was knocked out by a lone underdog, Buster Douglas[9 in one of the biggest upsets in history.