I have been recently diagnosed with Sjogren's Syndrome, an autoimmune disease which is an ongoing medical condition that affects my energy level and causes fatigue and joint pain.

When you step out on the court, I don't think anybody thinks about age. Because if you're out on this tour it means you deserve to be here. You've got the skill. It must mean you know how to play.

Everybody's got their problems. The important thing is not to complain about it.

My first job is big sister and I take that very seriously.

Grand Slam losses are hard. I treat myself after losses though, I usually go to McDonald's and I have a hamburger and you know, something. Because you know, you just need to be nice to yourself sometimes after the loss.

I guess it's a little bit sentimental, but at the time I was really very focused in on really my performance. Afterward, it was really just a breath of fresh air, just like, 'Oh, yes, I'm back now. I'm doing good.'

I think business is the same as tennis. You have to have the love, that helps, or else it's just too much pressure to be able to keep up with.