Celtics' Marcus Smart, Robert Williams III injured vs. Raptors

Boston Celtics guard Marcus Smart twisted his right ankle and was helped off the court late in the first half of Saturday's game against the host Toronto Raptors.

Smart promptly was ruled out for the rest of the game with a sprained right ankle. He finished with two points in 16 minutes of play.

Center Robert Williams III also will not return for the second half because of a hyperextended left knee for the Celtics. He a