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

When I was younger, I was a robot. Wind her up and she plays tennis.

I realized that with hard work, the world was your oyster. You could do anything you wanted to do.

I think team sports probably teach you more about giving - about being unselfish and being flexible.

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.

Being famous before you've formed your personality, before you have that self-esteem, is dangerous.

Not every child is cut out for an individual sport.