You're playing or you're not playing. If you're playing, so just shut up and play.

If I was the type of person who had tennis, tennis, tennis all the time and I went to bed and ended up dreaming about tennis, I would go nuts.

I give up on spending time on these courts; I give up on practicing before the tournament I hate. I hate this.

Whenever I am losing, it's like, 'It's his fault'. And whenever I'm winning it's like, 'That's us'. That's the team, the people.

I didn't change the world.

Many say that (Pete) Sampras is the greatest player. But I say with all due respect to the rest, that he (Roger Federer) is the most complete player in the world so far.

Roger [Federer], he brought tennis... one level higher. Normally he toys with everybody. With all respect to other players, he does whatever he wants on the court against them. It's incredible what kind of game he can play.