There is some moments on the career of everyone that are important ones. Is obvious that first title on clay makes a big difference. After that, I was confident enough to keep going, winning in Barcelona, in Rome, then in Roland Garros.

Stay healthy, do sports and above all have fun while doing sport. Competing or just for fun, whatever, simply enjoy and try your best. Working hard, working well with achievable goals normally pays off. Believe in the people that are with you and listen to those who have more experience.

I always work with a goal - and the goal is to improve as a player and a person. That, finally, is the most important thing of all.

I'd rather lose an argument than get into a long discussion in order to win it.

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.

I am decidedly unfriendly during a golf game, from the first hole to the last.

Some people may learn something from the way I play tennis. But there are also players who are better than me in certain techniques.