Sex doesn't interfere with your tennis; it's staying out all night trying to find it that affects your tennis.

Tennis is one of the only sports in America where the sport doesn't grow with the size of the person - it just forces you to swallow the whole pill.

I got a hundred bucks says my baby beats Pete's baby. I just think genetics are in my favour.

There's a lot of good waiting for you on the other side of tired. Get yourself tired.

A strong body listens. It obeys. A weak body commands. If your body is weak it tells you what to do. If your body is strong it'll actually listen to you when you tell it to do something. If you build it right you can overcome some of the obstacles of age and recovery.

I feel old when I see mousse in my opponent's hair.

Even if it’s not your ideal life, you can always choose it. No matter what your life is, choosing it changes everything.