On February 10 , 1990 1990: It’s sayonara for Mike Tyson. The undefeated heavyweight champ is the victim of the upset of the century when journeyman Buster Douglas, a 42-1 underdog, knocks him out in the 10th round in Tokyo. Tyson had been supposedly invincible, with 33 knockouts in his 37 victories. But at 220 1/2 pounds, Iron Mike appears flat and poorly conditioned against Douglas. Though Tyson knocks down the 232-pound Douglas with a vicious right in the eighth round, the challenger recovers. By the 10th round, Tyson’s left eye is swollen, and he has difficulty seeing. Douglas throws two rights, a left, a right that sends Tyson spinning and finally a left hook that knocks Tyson’s mouthpiece up into the air as the champ goes down. His face is a mask of pain and confusion as the referee counts him out. “I wasn’t afraid of the man,” Douglas says. “I’m only afraid of God.”