Keith Benson, a 6-11 center for Oakland University, has withdrawn from the 2010 NBA draft and will have surgery to strengthen a ligament in his thumb.

Benson was quoted in an OU news release as saying: ?My thumb doesn?t hurt. I am not in pain at all. I played the entire season with it but was advised that I will need the surgery down the line, so I have opted to have it now. I don?t want to take a chance of injuring my thumb by participating in NBA workouts.?