Mike Tyson | Boxing | Fight Clips | Rock Music on Instagram: "The biggest upset in boxing history - Mike Tyson vs. Buster Douglas, billed as Tyson is Back!, was a professional boxing match that occurred at the Tokyo Dome on Sunday, February 11, 1990. The then-undefeated, undisputed heavyweight champion Tyson lost by knockout to the 42-1 underdog Douglas. The fight is widely regarded as one of the biggest upsets in sports history."