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

If I am not playing at one hundred percent, it is going to be very difficult for me to win.

In tennis, because of the way it's scored, I don't think that scoring one point out of luck is ever decisive in winning. But, of course, it depends on the moment.

You just try to play tough and focus point for point. Sounds so boring, but it's the right thing to do out there.

It should not be a child's only goal to become the best player in the world. That would be a bad, a harmful attitude.

I only ever run when there's some point to it - say, if it's in a game of tennis.

I played almost four hours today, ... Im very, very tired.