20. Larry Holmes (1991)
Holmes and Trevor Berbick had one of the most notorious rivalries in boxing history. It all came to a head outside of the ring. While Holmes officially defeated Berbick in 1981, their most infamous confrontation came 10 years later. After Berbick brought up ‘Jenny from Jacksonville’ at a press conference, an enraged Holmes attacked him in the parking lot. Meanwhile, cameras were rolling.

This was before TMZ and YouTube but it was still a famous incident. The timing was perfect because all eyes were on Berbick as he was leaving the hotel. Holmes charged out of his limousine before throwing punches at his hated foe. Not many people felt sympathy for Berbick because of his rape conviction. Also, he shamefully brought up Holmes’ personal life so he deserved the beating (via The Independent).