If you lose, it hurts, but as long as you have fought hard, you can still feel good about yourself.

I am not playing Wimbledon because I am allergic to grass.

If you become great, then you can become happy. If you're happy first, it's much more difficult to be great.

I have seriously thought about retiring, but that was on a good day. On a bad day I've thought about killing myself.

I believe the brain is like a muscle - like any other it can be improved.

My serve and my forehand I pretty much always had, but my backhand was a made backhand. I worked on it for years.

But it's very difficult, I can tell you I played the Czech Open a few times and it's very difficult just to go on to a scene where the course is prepared differently when the greens are fast and he's not used to it and they're hard as a rock and he's not used to it.