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.

I tried to find a solution to the problem that I had, tried to find a way to start playing better.

Some people get very confused about my game. They think it's better if the court is slow, because I have a good defence. But the faster it is, the better for me. My spin is more painful for my opponents, my aggressive game works better.

When you get older, if you are healthy, is not a problem. If you don't have the health, then you go home.

Everybody is doing the best things possible to still healthy and to play as long as possible.

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

When one gets beaten by somebody better, one has to know how to lose with humility. Sure, I could have served better. Sure, I could have hit my forehand harder. But the truth was this was like an avalanche, and there was no way to stop it.