The young athletes are supposed to mature, to improve their personality.

My serve can get better, for sure. It's not just about serving bombs, but positioning, variation in speed, in spin.

I was shy when I was a kid, I was very shy, but now I think I've improved a lot. I can speak OK with the media and with the people. My English is still bad but I feel a little bit better now than before.

The only way of finding a solution is to fight back, to move, to run, and to control that pressure.

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

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 admire a lot of people, but in terms of sport I've always loved the mentality of Tiger Woods on a golf course. I always love his eyes when he's setting himself and focusing on his decision; he has a really strong, focused face and believes that he can make the shot.