(AP) -- Tiger Woods has undergone surgery today to repair cartilage damage in his left knee, a procedure that's expected to keep him out of action at least a month.
The surgery comes two days after Woods finished two shots behind Trevor Immelman in the Masters. Woods likely will miss The Players Championship but should be ready for the U.S. Open at Torrey Pines in June.
It's the third time he's undergone surgery on the knee since 1994. He gave no indication his knee was bothering him the first three months of the season as he won his first four starts. But his agent says Woods had been experiencing pain in the knee since the middle of last year.