Boston Celtics center Kendrick Perkins dislocated his left shoulder at the end of practice Wednesday and is day-to-day.

Perkins was hurt during a team scrimmage and X-rays revealed the dislocation, spokesman Jeff Twiss said.

Perkins, in his third NBA season, is averaging 4.5 points and nearly six rebounds a game. The Celtics drafted the 6-foot-10, 280-pound center out of high school.