I doubt about myself. I think doubts are good in life. The people who don't have doubts I think only two things-arrogance or not intelligence.

I love the crowds in Miami. I feel that is one of the tournaments where I get more support. That helps me a lot.

Don't think about being the number one in the world, try instead to get through today's program as well as you can. Then we will see whether one day you'll end up as number one or number 100.

I am afraid of a lot of things. A dog. I could be afraid of a dog that's upset, for example. And on the tennis courts, maybe on the outside I look fearless, but on the inside, I'm scared. There's not one player in the world who isn't nervous before matches. Especially important matches.

I play each point like my life depends on it.

There are many moments during a match when you are tense, wrestling with yourself. Tennis is a lesson in self-control.

I'm not the best player in the history of tennis. I think I'm amongst the best. That's true. That's enough for me.