Today people hit the ball with much more strength. Almost every player is capable of playing a winning stroke from any position. This means the balls arrive more quickly. If you want to reach them, you have to slow down from a high speed or suddenly change direction. These are moments when you can injure yourself, and that's what wears us out.

I am happy with being a tennis player and the choice I took when I was 12. But clearly, if I wouldnt have been a tennis player, I would have loved to be a soccer player. But again, I am happy with the choice I made.

I only ever run when there's some point to it - say, if it's in a game of tennis.

I just try to win the match by fighting for every point, and running down every ball.

Most important thing, I am not a player who win the serves because I serve aces or free points, no. When I winning a lot of serves is because I am playing well from the baseline. That's why.

Is only a tennis match. At the end, that's life. There is much more important things.

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.