[On a strained relationship between a tennis champion and her mother:] There comes a time when it's probably not cool for your mom to be your best friend.

I donate lots to charity. I don't necessarily tell everybody the number or what I do.

I've played too many tennis hours.

I could never have gotten back into my career without the undying support of my husband, who works full time at a stressful job! We decided that we were going to do this as total partners and it is a 50/50 deal with us.

While I was always successful... I never thought I'd be one in the world.

With my child, I hardly watch TV now.

You work your whole life to try to be the best you can, even if it's for only one day or one week.