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.

Us going out there and performing our best. That's how I define success. I'm not going to define it for us by the wins and the losses as much as by the effort and how we handle ourselves.

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

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

When you lack cohesion, it becomes difficult to have a clear marketing strategy.

Tennis doesn't encourage any kind of intellectual development.

There's a reason why Federer and Nadal are so gracious when they lose. They sleep well at night knowing that they've given their best.