Hard courts are very negative for the body. I know the sport is a business and creating these courts is easier than clay or grass, but I am 100 per cent sure it is wrong.

There are many moments during a match when you are tense, wrestling with yourself. Tennis is a lesson in self-control.

The US player Andy Roddick reaches speeds of 220 kilometers per hour when he serves. If I train with him every day, I will later be at an advantage against a player whose service crosses the net at 190 kilometers per hour.

I am very lucky because when I come back home, I have a completely normal life. I can relax, playing golf, fishing - doing what I want. I know when I finish a tournament, I am going to relax at home.

I dont have good luck in the match points.

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

I always had the theory that the most important thing is be happy, enjoy what are you doing, and be fresh mentally.