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.

The Boston Celtics are sticking with Al Horford as their starting center for Game 3 of the Eastern Conference semifinals Saturday, even though Kristaps Porzingis is available to play. Porzingis has been fighting an illness and was limited in the Celtics' two losses to the New York Knicks in Boston.