The St. Louis native went down late in the game with a non-contact injury that had him writing on the ground in pain.

The Boston Celtics lost Game 4 and saw Jayson Tatum suffer a potentially serious injury on Monday night against the New York Knicks. The Knicks won 121-113 thanks to a strong second half and erased another large deficit,

The Celtics blew a 14-point lead, then lost their best player to injury in a Game 4 loss to the Knicks that pushed Boston to the brink of elimination.