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.

There have been dozens of times the Celtics star sustained a painful injury, but Tatum would rise to his feet quickly. He couldn’t rise Monday.

Trainers help Boston Celtics' Jayson Tatum (0) off the court after he was injured during the second half of Game 4 in the Eastern Conference semifinals of the NBA basketball playoffs against the New York Knicks Monday, May 12, 2025, in New York. (AP Photo/Frank Franklin II) AP