Mike Tyson was the baddest man on the planet during his 20-year run in the ring. He compiled a 37-0 record before being knocked out by Buster Douglas in 1990.
He proceeded to rattle off eight straight wins before two consecutive losses to Evander Holyfield, once by TKO, and the following by DQ when Tyson bit his ear twice. Tyson closed his career at 50-6 in 216 rounds with 76 percent of his bouts coming at the hands of a knockout.
Happy birthday to the 49-year-old former champ.