If I win several tournaments in a row, I get so confident I'm in a cloud. A loss gets me eager again.

Losing hurts me. I was determined to be the best.

Ninety percent of my game is mental. It's my concentration that has gotten me this far.

To be a tennis champion, you have to be inflexible. You have to be stubborn. You have to be arrogant. You have to be selfish and self-absorbed. Kind of tunnel vision almost.

Single-mindedness. I hate to say it because I don't think it's the best thing for developing a person, but the single-mindedness - just concentrating in the one area - that's what it takes to be a champion.

You've got to take the initiative and play your game. In a decisive set, confidence is the difference.

Don’t let a first-set victory lead into a second-set slump