I don't think, that you can always - you can ever - get your game to perfection, you know. Only if you're Federer.

In order to stay where I am - and I want to do that - I have to stay dedicated as well as I have been before I became No. 1.

I haven't been in tennis for that long, but what I can say is that we have a lot of young guys at the top who are willing to do a lot of good things for tennis in general.

I always try to show my human side to my colleagues and to the whole circuit. More than anything because we are all on the same train, it is part of our work.

My father had never watched tennis, never liked tennis too much. He said, 'OK, we buy a racket, we watch together,' because we didn't know anything. It was a process of learning together that made it more interesting.

I want the same thing I've wanted since I was 7 years old. I want to be No. 1.

Not everybody can like what I do, and if you feel that somebody is coming up closer to you and starting the rivalry and everything, you maybe change your position to him.