Scalabrine active; Shelden sits

ORLANDO -- Celtics forward Brian Scalabrine dressed and was active for Tuesday's Game 2 of the Eastern Conference Finals against the Orlando Magic, while Shelden Williams sat out with back spasms.

According to the team, the injury is mild for Williams, who was spotted in the locker room in warm-up gear before the game, but Rivers elected to play Scalabrine instead to be safe.

Williams, playing in his first postseason in his fourth year in the league, has appeared four postseason games, averaging 2.8 points and 2 rebounds per game over 29 total minutes of action. Scalabrine, who is playing through a shoulder injury of his own that should require offseason surgery, has made only one appearance since March 28, playing 30 minutes in the regular-season finale against Milwaukee.