If you're a good experienced player, you wknow what it takes to do. If you're in trouble, you know how to change. One hundred percent of my game is instinct. I never stop and think I'm going to hit a ball crosscourt or down the line. I just do it.

On Rafael Nadal: Every point he plays is like match point. That's why he's the champion right now.

I'm amazed that years after I stopped playing tennis, people still recognize me in restaurants and ask for my autograph.

If you're afraid of losing, then you daren't win.

It's tough when you're No. 1. You don't have any private life, you can't even walk anywhere. I think that was one reason why I lost my motivation to play tennis.

I have a great family, great kids. I have practically everything, you know? Sometimes I have to pinch myself. It's really true: Life starts at 50.

I play tennis five hours a week, from Monday to Friday, for one hour every day. I like to be fit. If I can't exercise, I feel bad - I need to sweat and run to feel like I'm in good shape.