Blake Griffin and Thanasis Antetokounmpo had to be separated by their respective teammates after the Giannis’ brother headbutted the Celtics forward.

For Boston’s head coach Joe Mazzulla this was nothing new. He admitted that he has headbutted his opponents a couple of times as a player.

“I may have done that a time or two to somebody…If you need to,” Mazzulla said, via Jared Weiss of The Athletic.