There are a lot of brave and mind-blowingly stupid things you can do in Vegas, but jumping a UFC fighter must rank at the top of that list.
But according to TMZ, that's exactly what four guys did when they encountered Diaz in the Hyde nightclub at the Bellagio. A club rep told TMZ that Diaz accidentally bumped into one of the guys in the bathroom, before apologising and saying that he didn't want any trouble.
But the man, and his three friends, were having none of it.
I didn't start it. They didn't know who I was.
The UFC middleweight apparently shipped a big blow to the head, but according to the club rep, an 'insane melee' followed, with chairs being thrown before the men fought with security as they were escourted out of the premises.
According to Diaz who told TMZ that he isn't pressing charges for the incident:
They got the worst of it.
That'll teach them not to pick fights with professional fighters.