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I am my own main rival.

The rivalry is with ourself. I try to be better than is possible. I fight against myself, not against the other.

I had true rivalries. Not only did I want to beat my opponent, but I didn't want to let him up, either. I had a rivalry with Mac, Lendl, Borg. Everybody knew there was tension between us, on court and off. That's what's really ingrained in my mind: 'This is real. This isn't a soft rivalry.' There were no hugs and kisses.

There is nothing I love as much as a good fight.

One of the greatest victories you can gain over someone is to beat him at politeness.

I'm a competitor and a very proud man. If a guy beats me once, he'll have to do it again to make me believe him.

He who angers you conquers you.

Not everybody can like what I do, and if you feel that somebody is coming up closer to you and starting the rivalry and everything, you maybe change your position to him.

Well, a girlfriend once told me never to fight with anybody you don't love.