KEY BISCAYNE, Fla. — Roger Federer wasn't playing tennis when he hurt his knee two months ago. He was playing Dad.
Federer said he was preparing a bath for his twin daughters when he turned and heard a click in his left knee, leading to the first surgery of his career Feb. 3.
"It was a very simple movement, probably a movement I've done a million times in my life," Federer said Thursday. "I didn't think much of it when it did happen."
Soon his knee was swollen and required arthroscopic surgery to repair torn cartilage.