BOSTON (AP) -- Cleveland Cavaliers center Anderson Varejao missed Wednesday night's game against the Boston Celtics because of a bruised right knee.

Varejao, the NBA's leading rebounder at 14.4 per game, was injured Tuesday night against Toronto when he landed awkwardly on his right leg and crumpled to the floor in pain after being fouled late in the first quarter. He limped to the locker room, but returned with 9:04 remaining in the second quarter and finished with 22 points and 10 rebounds in 39 minutes.

After the game coach Byron Scott said he was still concerned about Varejao's availability against the Celtics.

Rookie Tyler Zeller got his first career start in Varejao's place.