Just one night before he become UFC Hall of Fame member, Matt Sierra was involved in a bar fight. Actually it was not a fight, Serra was holding the drunk guy in mount position and telling him to calm down, waiting for security to come.
This is what he posted on instagram:
How do you spend the night before your @ufc HOF induction?!? You subdue some asshole drunk that was threatening waiters then tries to swing on you
https://www.instagram.com/p/Bk1q15zljcs/?taken-by=mattserrabjj
https://www.instagram.com/p/Bk1wRZKFTQG/?taken-by=mattserrabjj