Jermaine O'Neal out for Celtics

PHILADELPHIA -- Center Jermaine O'Neal is out for Boston and forward Thaddeus Young won't play for the 76ers when the teams battle for first place in the Atlantic Division on Wednesday night.

O'Neal has a sprained left wrist. Young has an upper respiratory tract infection.

O'Neal is averaging 5.0 points and 5.4 rebounds. Young is third on the Sixers in scoring with 13.2 points per game.

The Sixers, who hold a one-game lead over the Celtics, already are missing starting center Spencer Hawes, who has a left Achilles strain.