I have lived my whole life with high intensity.

It's hard to say, 'I don't believe in God.' I would love to know if God exists. But it's a very difficult thing for me to believe.

Most important thing, I am not a player who win the serves because I serve aces or free points, no. When I winning a lot of serves is because I am playing well from the baseline. That's why.

Playing well or playing bad, I have to play aggressive. I must play aggressive.

The US player Andy Roddick reaches speeds of 220 kilometers per hour when he serves. If I train with him every day, I will later be at an advantage against a player whose service crosses the net at 190 kilometers per hour.

I became a player who goes to a lot of effort while training, who can rely on his will and his mental strengths.

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.