When you get older, if you are healthy, is not a problem. If you don't have the health, then you go home.

I always work with a goal - and the goal is to improve as a player and a person. That, finally, is the most important thing of all.

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.

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.

Seriously, I am not a person that I think much about what happened or what didn't happen or what could happen. I happy about the things that happened to me. I'm a lucky person, for sure, for all the things that happened to me during my life.

Some people may learn something from the way I play tennis. But there are also players who are better than me in certain techniques.

I used to wear sleeveless T-shirts all the time on court, but now I've got a brand new look - I've moved on to polo shirts. Sleeveless T-shirts give you real freedom of movement and they keep you cooler in matches, but I just thought it was time for a change.