And of one thing I have no doubt: the more you train, the better your feeling. Tennis is, more than most sports, a sport of the mind; it is the player who has those good sensations on the most days, who manages to isolate himself best from his fears and from the ups and downs in morale a match inevitably brings, who ends up being world number one.

I have no sense of humor about losing

I take pleasure in tennis and the hope that it requires.

I play each point like my life depends on it.

What distinguishes tennis is respect for one's opponent, one's conduct on the court.

Losing is not my enemy..fear of losing is my enemy.

It's more a tennis problem than a mental problem. The transition is difficult. It depends how much time you have. Playing on grass can sometimes be a bit of a lottery.