The somber atmosphere was about much more than the team falling down 3-1 in their series against the Knicks. Instead, the concern was centered around All-Star Jayson Tatum, who left the game in the fourth quarter with what appeared to be a serious right leg injury.

The Boston Celtics may be without one of their key players in Saturday's Game 3 matchup against the New York Knicks.

BOSTON (AP) — Celtics center Kristaps Porzingis didn’t play in the second half of Boston’s 108-105 overtime loss to the New York Knicks in Game 1 of the Eastern Conference semifinals because of an illness. Porzingis wasn’t on the floor initially with the team Monday night as they warmed up prior to the start of the second half.