I had moments of my actions and words not reflecting who it is I am - if that defines a punk, then yes, absolutely.

First of all, in any sport where you can measure distance, height speed and all of that, you see how athletes have changed their sport and made it better. I believe, with every generation, the sport has improved. Certainly, in the men's game, that has been the case. I think that I played Pete [Sampras] at his best, I played Roger [Federer] at his best.. I believe wholeheartedly that Roger and [Rafael] Nadal have pushed the game much further than myself or Pete ever did. Their options on the tennis court are considerably more than ours.

You've got to believe you can win. But I believe respect for the fact that you can lose is what you always have to keep in mind so that nothing suprises you.

I play tennis for a living even though I hate tennis, hate it with a dark and secret passion and always have.

This sport has given me so much that my hope would be to give back as much as I can for as long as I can.

Tennis was always sort of a - a learning. It was a vehicle for me to discover a lot about myself.

No athletes talk to themselves like tennis players. Pitchers, golfers, goalkeepers, they mutter to themselves, but tennis players talk to themselves-and answer. Tennis players look like lunatics in a public square.