Joel Embiid and Karl-Anthony Towns were ejected for fighting in the third quarter of Wednesday night's game between the Sixers and Timberwolves in Philadelphia.
The two centers sparked a brawl after Embiid trapped Towns in the corner on a double team, locking arms and shoving each other at Minnesota's end of the floor.
Towns ended up throwing a punch at Embiid and missing before putting the Sixers' big man in a headlock. Ben Simmons also took part in the fight, appearing to have his forearm around Towns' throat.
Teammates and coaches separated Towns and Embiid before both were ejected from the game.
Suspensions for both players could result following the brawl.