UFC heavyweight champion Jon Jones is no stranger to fist fights. He's competed 30 times in professional MMA and infamously brawled with Daniel Cormier at a UFC 178 media event. But Jones never witnessed anything like Nate Diaz's recent melee on a Russian reality show set.

Daniel Cormier fought Jones for the title twice—once as a challenger at UFC 182 and the other as a champion at UFC 214. Cormier would lose both fights before the rematch was overturned from a TKO to a no-contest result due to Jones testing positive for the steroid Turinabol.

Nate Diaz has dropped out of doing a reality TV show with Jon Jones after there was a melee on set in Thailand. The UFC stars were set to be opposing coaches on a Russian version of The Ultimate Fighter.