You can tell when someone has been on steroids A guy bulks up, has a new body and never gets tired...You see these guys or girls who come onto the tour talking about their new training programs and their diets where they eat this or that new thingbut they'll never tell you about the drugs they took.

I'll let the racket do the talking.

If you want to be a tennis player, then mould yourself on Roger Federer. I won three Wimbledon titles and I wish I could play like him.

It's been predictable, in the sense of 'expect the unexpected'.

If, in a few months, I'm only number 8 or number 10 in the world, I'll have to look at what off-the-court work I can do. I will need to do something if I want to be number 1.

There's something deeply satisfying when it succeeds, but I'm not going to do another book just to put my name on something and make some money if it's not something I deeply care about.

Serena Williams best female player ever - no question.