Philadelphia 76ers guard Michael Carter-Williams is unsure when he'll return to play following offseason shoulder surgery. Carter-Williams, the NBA rookie of the year, had surgery in May to repair the labrum of his right shoulder. Sixers coach Brett Brown said Carter-Williams has not been cleared to play for the start of training camp on Tuesday. Read more http://espn.go.com/nba/story/_/id/1...ladelphia-76ers-shoulder-not-yet-cleared-play