Andy Roddick

Do you have to be like a second-grade dropout to be an umpire? Did you go to school until you were 8 years old? I think you quit school before you were 10. Stay in school kids or you'll end up being an umpire.

When I have a creative insight, there is a high. I think back in the day, I made music as much as I did because it made me feel so good. I think you could argue that there is a creative addiction - but, you know, the healthy kind.

Boxing is like chess. You encourage your opponent to make mistakes so you can capitalise on it. People think you get in the ring and see the red mist, but it's not about aggression. Avoiding getting knocked out is tactical.