Even if I have already peaked, I have to believe I can improve. I wake up every morning, and go to practice, with the illusion that I'm going to get better that day.

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.

My uncle developed the training philosophy. His idea of good tennis training is basically quite simple: you must try to gain time.

I have lived my whole life with high intensity.

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.

My motivation and aspiration is the same, being number one or being number five. So that's the truth. And my goal is the same - it's to always be happy playing, it's to enjoy the game and improve always.

I am lucky because my family are comfortably off. My father has his own glass business.