Professional tennis has become an extremely physical and unbelievably competitive sport. Injuries are the bane of tennis players, and it goes with the territory.

For some reason, every time I peak in my career, I injure myself. So, I'm constantly on the comeback trail.

Not many people know, but my joints are extremely hypermobile, and that's why I'm more prone to injuries. That's why most of my major injuries were with the joints. I had a career-threatening wrist injury where picking up a fork to feed myself was a problem, and the thought of playing tennis again was so far from my mind.

You want to try and win as many slams as possible in your career. As a tennis player, that's what we always dream of as a kid, wanting to play slams, wanting to win them.

What made it so special was the city of Houston had never won a sports championship. I think the championship changed people's thinking about their own city. It made them feel like their city had some significance that it hadn't had before.

Kobe Bryant was the reason I started playing basketball - always was and will be my favorite player of all time. I love the way he could get his shot off, his footwork down in the post, just his determination to be the best player.

The beauties of the game may be lost on some of us sometimes, but many children will read about football when they will read nothing else, not for realism or glamour but for romance.

Every year, I have a tournament in Czech Republic, so there are a lot of things I'm trying to do. Sometimes the money goes towards children; sometimes it's for wheelchair tennis players. I try to change it so everybody gets something.