J.R. Smith was ejected from Game 4 of the Cavaliers-Celtics first-round series on Sunday after striking Boston's Jae Crowder in the head.
While the players battled for position under the basket, Smith swung his right arm at Crowder. His right fist appeared to catch Crowder in the face.
Crowder remained on the ground for several seconds after the hit. He was helped off the floor by teammates. The Celtics announced he would not return to the game later in the quarter, due to a sprained knee. Crowder finished the game with seven points, three rebounds and two assists in his first start of the series.
After a video review, officials assessed Smith with a flagrant-two foul on the play, resulting in an automatic ejection. Smith could also be subject to a suspension for future postseason games, as the league reviews all flagrant foul calls to decide if additional penalty is warranted.
It was the second flagrant foul absorbed by Crowder. Former Celtic Kendrick Perkins leveled Crowder on a screen in the second quarter and was assessed with a flagrant one.