Since I was a kid, I've wanted to do sports for a living. In the beginning, I played a lot of soccer, but in the end I chose tennis. I love sports in general ... But tennis is my passion.

If somebody says I am better than Roger, I think this person doesn't know anything about tennis.

I don't have any idols, any heroes, nothing, no.

It's not the time to look for excuses.

For sure, with golf it's not a physically demanding sport like tennis. That's what makes tennis great - you combine both things. It's a very mental sport and at the same time can be dramatically physical. But I do admire the mentality of sport more than the physicality because physical performance is much easier to practice than mental performance.

I'm not the best player in the history of tennis. I think I'm amongst the best. That's true. That's enough for me.

It should not be a child's only goal to become the best player in the world. That would be a bad, a harmful attitude.