BOSTON — DeMar DeRozan scored 30 points to lead the San Antonio Spurs to a 129-114 victory over the Boston Celtics. 

The Spurs scored 22 of the game's first 25 points and held on through a more competitive and controversial second half. 

Kemba Walker returned after missing three games with the flu and was ejected with back-to-back technical fouls when he argued a non-call in the third quarter. 

A full bottle or cup was thrown from the stands, landing in front of the San Antonio bench. The game was delayed briefly while the court was cleaned up.