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

Don't mistake activity for achievement - practice the right way. - John Wooden I only play well when I'm prepared. If I don't practice the way I should, then I won't play the way that I know I can.

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

I just travel all the time. And I was just looking at the schedules now and starting the first week of October I will be every weekend with somebody at tournaments through Christmas. So it gets very difficult to just go away and not do that.

Too many people asking too many questions in tennis. Golf is better.

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

It's very nice to see when somebody who wanted to work hard and is willing to put the work in gets rewarded for it.