Boston Celtics Fans Deliver Real Knock Out Punch At Game 4 Watch Party
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The Boston Celtics and Dallas Mavericks weren't the only ones going head to head in the NBA finals ... a bunch of Celtics fans got into an amateur boxing match at a game 4 watch party.
Friday night's brawl broke out between two men seated near each other in the crowd at TD Garden arena in Beantown ... where Celtics fans were having a viewing party of the on-court action taking place inside American Airlines Stadium in Dallas.
Check out the vid ... the younger dude was standing over the older guy and using his head as a punching bag. Several bystanders and a security guard tried to pull the aggressor off the old man as he cowered on cement stairs.