Don't mess with an Aussie rules player, especially when he's trying to get a celebrity's autograph.
The Gold Coast Suns AFL team was at a nightclub in Los Angeles when, according to Andrew Hamilton from the Herald Sun, Rihanna showed up. The team was asked to leave, but Steve May tried to force his way back in to get an autograph, starting a brawl. Teammate Campbell Brown tried to stop May from getting in and ended up breaking his jaw, sending him to the hospital.
Thanks to The Big Lead for the find.