Amir Johnson: Will have MRI performed on shoulder

Johnson moved back into the starting lineup for Game 3 on Sunday, but eventually
hurt his shoulder, which limited him to a total of nine minutes. The Celtics are
going to have Johnson go in for an MRI to make sure he’s not dealing with
something more serious and that should give us a better indication for how long
it could keep him on the sidelines. For now, consider Johnson questionable going
into Game 4 on Tuesday, with another update likely coming following his MRI.