When I play, I'm boiling inside. I just try not to show it because it's a lack of composure, and if you give in to your emotions after one loss, you're liable to have three or four in a row.

Find something that you're really interested in doing in your life. Pursue it, set goals, and commit yourself to excellence. Do the best you can.

I've had a lot of fear in my life, from fear of flying to fear of making a speech in front of a lot of people.

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

I think team sports probably teach you more about giving - about being unselfish and being flexible.

Once you've been number one, you can never be satisfied with less.

If you can react the same way to winning and losing, that's a big accomplishment. That quality is important because it stays with you the rest of your life, and there's going to be a life after tennis that's a lot longer than your tennis life.