Getting to number one in the world without a coach is highly unlikely.

It's really easy to find your friends when you're playing away. You have a close-knit group with you and everyone else is cheering hard for their side. There's more satisfaction coming away with a road victory.

America is the world's policemen, whether you and I like that or not. That's a fact. People globally feel that.

Tennis is more than just shots. It's about being clutch and beating the people on the other side of the net.

If you don't want to practice, unless you have a hard-nosed coach, you don't have to.

There are certainly great cities in America that don't have ATP and WTA events. Our fans are very provincial. They want American champions.

Tennis is still very successful in spite of itself.