Cavs guard Parker returns after missing 12 games
Parker, playing for the first time since Jan. 29, is averaging six points in 18 games.
Celtics center Jermaine O'Neal missed his second straight game with a sprained left wrist. He remained in Boston and will be examined by doctors Wednesday.
Forward Brandon Bass, who has missed the last six games with a sore left knee, and center Chris Wilcox, who didn't play in the final game before the All-Star break because of a strained right adductor, are both available for Boston.