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.

I question myself every day. That's what I still find motivating about this. I don't have the answers, I don't pretend that I do just because I won the match. Just keep fighting and maybe something good happens.

I think one of the greatest joys I have now in my career and in my profession is to be playing at an age where I can appreciate it more than I used to... It's a whole different lens you look through the older you get.

The most animated talks we have are about...things

I feel old when I see mousse in my opponent's hair.

If I've learned nothing else, it's that time and practice equal achievement.

My accomplishments do not live up to my tennis game. Most people have to work really hard and win some big matches, and then they get money and popularity. For me it has been the reverse of everybody else. The exact opposite.