25-year old starting center Kendrick Perkins will miss the next 5-6 months after having his ACL surgery yesterday. The Celtics don’t expect him back until December or January and that is a huge blow to them. Perkins really stepped up last season for the Celtics as he played in 78 games (all starts) in which he averaged 27.6 minutes, 10.1 points, 7.6 rebounds, 1.0 assist and 1.7 blocked shots per game. He has now played in 442 games (328 starts) in his 7 years with the Celtics and he has averaged 22.2 minutes, 6.4 points, 6.0 rebounds, 1.0 assist and 1.4 blocked shots per game.