I'm not an overly ambitious person; I don't feel like I have to excel.

The great high of winning Wimbledon lasts for about a week. You go down in the record book, but you don't have anything tangible to hold on to. But having a baby -- there isn't any comparison.

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

If you're a champion, you have to have it in your heart.

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

Ninety percent of my game is mental. It's my concentration that has gotten me this far. I won't even call a friend on the day of a match. I'm scared of disrupting my concentration. I don't allow any competition with tennis.

If you can react the same way to winning and losing, that's a big accomplishment.