It's great, but there is one problem. She doesn't sleep. At night she seems to turn into a vampire. She wakes up every night five or 10 times, asking for things, singing, calling out.

If she only wakes up five times in a night, it's like I've won the lottery. I'm awake at night and asleep during the day. I haven't found a way to keep her asleep. I tried yelling, but if I yell it gets even worse, she starts to cry and scream even more

As soon as I step on the court I just try to play tennis and don't find excuses. You know, I just lost because I lost, not because my arm was sore.

When you are winning too much, sometimes you think you should never lose again. I am learning to lose.

Although we didn't have much when I was growing up in Split, Croatia, my parents always tried to ensure that my sister and I had the things we needed, and it was enough for us.

At her birthday, my seven-year-old daughter will say that she wants these big cakes and certain expensive toys as presents, and I can't say no to her. It would just break my heart. But when I was little, for birthdays we just played outside and we were happy if we got any cake.