Woods undergoes knee surgery

EDINA, Minnesota: Tiger Woods underwent reconstructive surgery on Tuesday to repair a torn ligament in his left knee, an operation described as a success by his doctors.

The American world No 1 decided last week to have a fourth operation on the same knee, just two days after playing through pain to win the US Open in San Diego.

"We were confident going into this surgery and I am pleased with the results," Dr. Thomas D. Rosenberg said in a statement issued by Woods' management team.