I feel that love. I feel that energy. I always felt that energy when I'm playing in New York.

The bad thing about the [tennis] calendar is how it is made and obligates you to play tournaments all year. If you want to achieve the most you can (and) go as high up (in the rankings) as you can, you have to play from the start to the finish because there are important tournaments from the beginning to the end.

You fight, you try your best, but if you lose, you dont have to break five racquets and smash up the locker room. You can do those things, but when youve finished, nothings changed. Youve still lost. If something positive came from that, I probably would do it. But I see only negativity.

It's important for the young players to practice other ball games as well, basketball or table tennis. On the tennis court, you can improve your eye through a kind of overexertion.

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

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

My tennis is aggressive, though I wouldn't say that it's more physical than technical. I rely more on technique than physique, but being physical is always a help to me.