When I turned professional, what I was really aiming for was to be in the top 100, try to hold the top 100 for ten years, and just be in the show, and have a nice career. It's more than I could have ever hoped for. I worked awfully hard for it, but there are other people who worked just as hard and didn't get the breaks. I recognized that I've been lucky and being able to live this life that I wanted since a young age. I really went after it with everything that I have and somehow it worked out.

Fear is an interesting energy that we all have to face. Some people step up and aren't afraid but still come up short. And some would rather cop out: "My shoulder hurts" or "I didn't give it my all." They can sleep at night.

Tennis doesn't encourage any kind of intellectual development.

We lose a lot of young athletes because tennis is such a difficult sport. It's not like kicking a soccer ball.

Trophies separate the winners from losers, and life is about winning and losing. Go into business and you see. You're competing every day.

You need to make sure everyone is healthy first and foremost.

I am there to play tennis and represent the U.S., but I'm also aware that not everyone's going to be able to think that way.