Jayson Tatum scores 42 points before a severe leg injury; Celtics lose to Knicks, 121-113.

Boston Celtics star Jayson Tatum suffered a severe lower right leg injury during Game 4 against the New York Knicks, scoring 42 points before being carried off the court. The Knicks won 121-113, taking a 3-1 series lead. Tatum will undergo an MRI to determine the extent of the injury, which could impact the Celtics' playoff chances.