Celtics forward Jared Sullinger has a bruised bone in his right knee and is listed as day-to-day.
Sullinger underwent a precautionary MRI Tuesday afternoon due to colliding with Maurice Harkless in Monday night's game against the Orlando.
"Nothing conclusive, and certainly day to day it sounds like they are looking at, but we just don't know yet, so we want to make sure," said coach Stevens.
Sullinger has been a solid contributer off of the bench this season. He is averaging 11.3 points and 7.3 rebounds in 19 minutes per game.
Kris Humphries will most likely receive more playing time if Sullinger is unable to play.