It's really impossible for athletes to grow up. On the one hand, you're still a child, still playing a game. But on the other hand, you're a superhuman hero that everyone dreams of being. No wonder we have such a hard time understanding who we are.

Marriage isn't a 50-50 proposition very often. It's more like 100-0 one moment and 0-100 the next.

I always wanted to help make tennis a team sport.

You have got to want to be the best before you can even begin to reach for that goal, and you have got to be prepared to sacrifice a lot to get there.

I think it's really important to have portion control. I don't believe in losing weight quickly.

Men still get a lot more opportunity. It is still a big part of the old boy network... They have more companies they can get money from.

If your partner wants to be private, you have to respect that.