We all know who the real number one is. Quite frankly, I'm the best in the world.

I need to be at my peak and my best is holding up the trophy. Anything less I wouldn't be really excited about. So that's all I can focus on.

If you can keep playing tennis when somebody is shooting a gun down the street, that's concentration.

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

What's going to make me happy is going on the court and holding up trophies, singles and doubles.

My dad is the nicest guy you'll ever meet, and the easiest going.

I love metaphors. I've never been on this train. ... If I'm standing on the middle of a track, I'm definitely going to get derailed. I have to make sure that I'm on the train and not in front of it.