Michael Redd tore his ACL and MCL in his left knee after quickly pulling up and having his knee buckle, similar to an injury from last season that sidelined him. Balanced training, strong hamstrings, and exercises like running backwards can help prevent ligament tears. Ben Sheets tore the tendon in his right elbow and underwent surgery to repair it, hoping to recover by 2010. Maintaining full range of motion in the elbow can help prevent future flexor tendon injuries. Joel Przybilla ruptured his right patellar tendon while going up for a rebound and had to be helped to the locker room. General knee injury prevention includes balanced exercise and stretching hamstrings and quads.