Tennis is a mental game. Everyone is fit, everyone hits great forehands and backhands.

It is very important and my success very much depends on the harmony that I feel in my private life. It is essential for me to be happy in my private life. And if it continues, I am able to continue playing tennis.

My father believed in me many times more than I believed in myself.

I am the greatest tennis player. The other players are like coins in my pocket that I give to a homeless man.

I like my groundstrokes, I can say. I like it. That's my game - I'm a groundstroke player and I play pretty aggressive.

I always try to adjust to the situation.

In my case, I can sincerely say that nothing is impossible... When I was saying I want to be No. 1 of the world, and I was seven or eight years old, most of the people were laughing at me because it seems like I have one percent of chances to do that, and I've done it.