I'm not to eager to play tennis in my spare time. I'm more interested in doing gym work and stuff like that. We have a lot of schools and courts around where I live, so if I really want to play I don't need to go too far.

Maybe I have to work a bit harder on clay. It's a challenge and I've always liked challenges. Whether I will ever win the French and master playing on clay, who knows? But I'll give it a shot.

I'm fortunate: I can play as long as I want to play. There's no coach or trainer who is going to say to me that I'm dropped or sacked, it's time to move on. I can play as long as I want to play.

That's what you do all the hard work for, to play in situations that put your body through gruelling times. If you're not up to it, pull out.

I was lucky enough to win the Davis Cup in my first year in 1999. I won my first slam at the U.S. Open in 2001 and became world No. 1 later that year. By the age of 20, I'd done it all.

There are people who love you and people who hate you, but for me, more so, people only think they know me by how I act or perform on a tennis court.

I wanted to work towards the four majors and the Davis Cup. I know to a lot of people it may not mean too much, but to me (Davis Cup) means an awful lot.