I don't mind fans coming up in a friendly, respectful way. That's all part of the fun of being a top tennis player. But if people take pictures without permission, particularly if my children are in the shot, I feel uncomfortable.

I love sport, I grew up playing sports, that's all I did, and it is so invigorating now that I'm supposedly adult to learn something completely new, from the bottom up.

Sports, as a media property, is increasingly valuable because it's something you have to have live. As a result, we're a better touch point for sponsors and advertisers because our commercials typically don't get zapped out.

Absolutely. I think that this is - politics is a tough business. I describe it as a full contact sport. You have to be prepared to get in there and mix it up.