If you can react the same way to winning and losing, that's a big accomplishment.

If you can react the same way to winning and losing, that's a big accomplishment.

To be a tennis champion, you have to be inflexible. You have to be stubborn. You have to be arrogant. You have to be selfish and self-absorbed. Kind of tunnel vision almost.

Now that I'm losing some, I can see how tough I was -- the killer instinct, the single-mindedness, playing like a machine. Boy, that's what made me a champion.

I love hiking in the mountains in Aspen. Breathing the clean, fresh air is great. Plus, it gives me a cardiovascular workout and firms my legs.

When I was younger, I was a robot. Wind her up and she plays tennis.

You're always striving to play that perfect match.