Some people say I have attitude - maybe I do... but I think you have to. You have to believe in yourself when no one else does - that makes you a winner right there.

If I go down, it's never easy. At least my opponent knows they have to go to the end of the earth to take me out no matter what the circumstances. I do try to compete. Even if it's not your best day, I just try to walk off the court knowing I gave 100,000 percent.

When you get into that habit of winning, it gets - I don't know if you call it contagious - but it gets to be a habit. She's developed an unbelievable habit.

Whatever it is, people have issues and that affects you deeply. So you have to get to the bottom of it and not let that affect your life decisions and really understand why you're making the decisions you make so that way you can understand how to not do that, so I always encourage people to ask why and then to really understand you, because that's the only way to be your most successful and your most happy.

I always like to win. But I'm the big sister. I want to make sure she has everything, even if I don't have anything. It's hard. I love her too much. That's what counts.

There is nothing like playing at Wimbledon; you can feel the footprints of the legends of the game-men and women-that have graced those courts.

To be a well-rounded person and know what's going on in the world around you, to have a perspective outside of your sport, is important for every athlete. I'm blessed that our parents gave us that.