No matter what you study, the thing that you know best is what you grew up with..

If everything was going smoothly you would never build character..

You have your bad moments in your career and your good moments. And it's been a good ride so far, but it's not over yet..

When you start from nothing, when you come from nothing, it makes you hungry. I am proud of where I came from and I know what I want. I want to win..

It's always tough when you lose - you've worked so hard for that moment and it hasn't gone the way you wanted. But you have to realise there's always….

I want my tennis to speak for everything..

I want to be different. If everyone is wearing black, I want to be wearing red..

We all started under the sun and finished under the lights..

I had so many outs in my career. I could have said, I don’t need this. I have money; I have fame; I have victories; I have Grand Slams. But when your….

I hit a ball for a living, but I have that passion to keep learning..

I'm never standing still and that makes my life pretty exciting..

I can't please everyone. That's not in my J.D., you know, not in my job description..

I'm focused on going out every day and doing my best..

It's easy to impress me. I don't need a fancy party to be happy. Just good friends, good food, and good laughs. I'm happy. I'm satisfied. I'm content..

I love what I do and I love being an athlete, but I also love all the things that have come with it..

Women's tennis is getting faster and the girls are getting more athletic, so I need to push myself to become a better athlete. I think 2013 showed me….

A great tennis career is something that a 15-year-old normally doesn't have. I hope my example helps other teens believe they can accomplish things t….

Whether you win a match or lose a match, in terms of your emotions, it's important to be pretty levelheaded..

It's pretty hard being a tennis player and Mother Theresa at the same time and that's just the way it is..

If you're able to help some people and make them smile and make them realize that life is good, then that's worth so much more than buying a pair of ….

I'm just a very tough person when I go on the court, and I really don't want to lose..