I think I am a complete player. I can play well on all the surfaces. For me, the clay might be easiest, but I am not a specialist on clay.

For sure, with golf it's not a physically demanding sport like tennis. That's what makes tennis great - you combine both things. It's a very mental sport and at the same time can be dramatically physical. But I do admire the mentality of sport more than the physicality because physical performance is much easier to practice than mental performance.

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

I am not a person who I am thinking about what I achieved or what I don't achieve. I am a person who try to enjoy the moment. That's what I do.

Is always the motivation to play better and better. But I think we are in a very good way to keep winning matches. That's most important thing for me.

We should try to teach the young people values that are useful to them whether they become professional athletes or not.

You have to accept both losing and winning well. I've stayed calm when I'm winning and I've stayed calm when I've lost.