Mike Tyson
Few combat sports athletes have an aura like Tyson. The former heavyweight champion was a savage knockout artist but he was in decline when he fought Evander Holyfield. The latter shocked the world in their first meeting and Tyson demanded a rematch. ‘Iron Mike’ didn’t enjoy their second clash but he produced one of the most notorious fouls ever.

Tyson bit a chunk of Holyfield’s ear off and suffered a disqualification after round three. This was his second attempted bite of the short match. Initially, referee Mills Lane didn’t realize what happened and allowed the fight to continue. Then, at the end of the round, he called an end to the match (via TalkSport).