Xavier Tillman is questionable for the Boston Celtics' game against the Portland Trail Blazers on March 23, 2025, due to a left knee joint sprain. Xavier Tillman is questionable for the Boston Celtics' game against the Portland Trail Blazers on March 23, 2025. He is dealing with a left knee joint sprain, the same knee that has been problematic this season. Tillman has played in 29 games and been inactive for 41 this season. If he cannot play, players like Kristaps Porzingis or Luke Kornet may see more time on the court.