Michael Gerard Tyson is a former professional boxer from the United States who competed from 1985 until 2005. Tyson, nicknamed “Iron Mike” and “Kid Dynamite” in his early career before becoming “The Baddest Man on the Planet,” is widely regarded as one of the best heavyweight boxers of all time. From 1987 through 1990, he was the undisputed world heavyweight champion. Tyson knocked out his first 19 professional fights, 12 of them in the first round.
Tyson is the youngest heavyweight champion in history, having won his first title at the age of 20 years, four months, and 22 days. He was the first heavyweight boxer to hold the WBA, WBC, and IBF titles at the same time, and the first heavyweight to do it in succession. Tyson became the lineal title the following year when he knocked out Michael Spinks in 91 seconds of the first round. In one of the biggest surprises in history, Tyson was knocked out by underdog Buster Douglas in 1990.