James "Buster" Douglas (born April 7, 1960) is a former undisputed world heavyweight boxing champion who scored a stunning upset when he knocked out previously undefeated champion Mike Tyson on February 11, 1990 in Tokyo, Japan. At the time, Tyson was considered to be the best boxer in the world and one of the most feared heavyweight champions in history due to his utter domination of the division. The Mirage Casino in Las Vegas, the only Las Vegas casino to make odds on the fight (all others declining to do so as they considered the fight such a foregone conclusion), had Douglas as a 42 to 1 underdog for the fight, making his victory, in commentator Reg Gutteridge's words, "the biggest upset in boxing history, bar none."