Each year represents new challenges and obstacles. You have to adjust.

My success has a lot to do with my private life. I've matured a lot by first becoming a husband and now a father. My life is in the right direction. And that helps a player to thrive. One thing is linked with the other. My private life has helped me.

Nadal's the best player in history on [clay], and he is one of the best-ever players that played this game.

In terms of playing ability there is nothing to choose between number one and 100. Instead, it's a question of who believes and who wants it more? Which player is mentally stronger? Which player is going to fight the hardest in the big points? These are the things that determine who is the champion.

I always tried to win. I was as competitive as I am today.

I'm very fortunate to have the support of the people around me, I feel happy because my wife helps me and people who are close.

I had a nice childhood. War and all the experiences affected me as a person and helped me to grow, to change.