Jayson Tatum was carried off the court with a lower right leg injury with 2:58 remaining in Game 4 of the Eastern Conference semifinals on Monday night.

Jayson Tatum’s potentially serious lower left leg injury cast a pall over the second round. Tatum collapsed to the ground in the fourth quarter of the Celtics’ Game 4 loss to the New York Knicks and had to be carried off the court after he was writhing in pain and grabbing at the back of his ankle.