James "Buster" Douglas pulled off one of the biggest upsets in sports history when he won the heavyweight championship with a 10th round KO of "Iron" Mike Tyson in Tokyo, Japan #OnThisDay in 1990. Douglas infamously took a slow count in round 8 before rallied for the win. pic.twitter.com/tFKa8gm1cO

— Boxing History (@BoxingHistory) February 11, 2024