Backup point guard Dan Dickau suffered a ruptured right Achilles tendon Saturday against the Bulls and is likely done for the season.

?It?s very disappointing to hear the news on Dan,? Celtics director of basketball operations Danny Ainge said. ?He had been working hard and had accepted his role. He has been a very good teammate.?

Starting point guard Delonte West suffered a mild concussion in Chicago but is likely to play against Golden State tonight.