As a player, I've always been interested in understanding the coaches' minds, in seeing how they made a group function.

I played over 130 matches, including four finals, so there have been many great moments.

When I went to AC Milan, they were four points away from the relegation zone, and by the end of the season, we were just one goal away from being in the Europa League.

I have spent half of my career at Milan.

Tennis needs some different personalities and a lot more emotions.

We want to build this sport all over the world and it absolutely, positively works in the U.K.

As tennis players, we work and we sacrifice many things. To lose, that's not a happy thing - I mean sure, I was disappointed. You have to come back strong. But to win the last point in a grand slam tournament, that's the most beautiful and most satisfying feeling you can get as a tennis player. It's worth it.

With tennis, if you're very good at a young age, you don't even go to your prom. You're down at some tennis academy in Florida where you're on the court 8 hours a day. It's brutal.