Luck has nothing to do with it.

I've always considered myself the best and the top. I never considered that I was out of it.

I wish I could play like Roger Federer.

How many people yell at linespeople? I see it happening all the time. I don't know how many times I have seen that happen.

I feel like I don't have to win anymore. I've had a wonderful career. Tennis has given me so much, things I would have never expected in my life. I feel honored to even be a part of such a wonderful sport.

I was talking to my mom one time, like, "Gosh, I'm 30." And she's like, "In your thirties you're even stronger than in your twenties." I didn't believe her, but I have played better in my thirties.

I'm not taking Zika lightly. Especially being older, I definitely am going everywhere protected. I'm protecting myself.