Tiger Woods sidelined by knee surgery

Tiger Woods had arthroscopic surgery on his left knee Tuesday to repair cartilage damage, his second operation in five years on the same knee. He is expected to miss at least a month while he recovers.

The surgery, announced on his Web site, came two days after Woods finished two shots behind Trevor Immelman in the Masters. He most likely will miss The Players Championship, but should return in time to play the U.S. Open at Torrey Pines on June 12.