"I can't tell you if I'll be 100 percent for the U.S. Open. It depends on many factors but clearly, I'll work as hard as I can try to be in condition there. But most of all, I want to make sure my knees respond well. Once I know my knees will respond well, I can train well, I can compete with greater calm and that's what will give me, little by little, the confidence to train at the maximum level."
-- Rafa, on his health going into the US hardcourt swing.