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

Not only did the Boston Celtics lose to the New York Knicks Monday to fall to within one game of elimination from the NBA playoffs, they also lost Jayson Tatum to a lower-leg injury. Which means he may not be around to help them fight back from the 3-1 series deficit.

Boston Celtics star Jayson Tatum appears to have suffered a serious injury in Monday's Game 4 playoff loss against the New York Knicks. Trailing the Knicks in the waning minutes of the fourth quarter, Tatum crumbled to the floor while pursuing a loose ball. He immediately grabbed at the lower part of his right leg in obvious pain.