Mike Tyson

 Michael Gerard Tyson (born June 30, 1966) is an American former professional boxer who fought between 1985 and 2005. Tyson, who was nicknamed "Iron Mike" or "Kid Dynamite" in the beginning of his career and later "The Baddest Man on the Planet" is widely regarded as to be among the top heavyweights ever. He reigned as the undisputed champion of the world from 1987 to 1990. Tyson won his 19 first professional fights by knockout. Twelve of them were within the first round. Tyson aged 20 years, 4 months, and 22 days old at the time winning his first heavyweight title holds the record as the youngest ever boxer to hold the title. Tyson was the first heavyweight to own both the WBA as well as the WBC titles simultaneously. Tyson was also the only heavyweight to combine all three. In the following year, Tyson became the lineal champion when he knocked out Michael Spinks in 91 seconds of the first round. In the year 1990, Tyson was knocked out by a lone underdog Buster Douglas in one of the biggest upsets in history.