Tatum suffered a devastating injury in Game 4 loss against the Knicks. He suffered a ruptured Achilles in the fourth quarter of the game. Tatum had to be lifted off his feet and carried off the court. Since his 2017 addition to the team, Tatum has been crucial for the Celtics.

The New York Knicks guard was left bloodied after taking an elbow to the face by Boston Celtics center Luke Kornet. Hart would make both his foul shots and exited the game moments later to change his uniform. The Knicks led the Celtics 32-30 after the first quarter.