It's unfair to expect the USTA, just because they make this pot of money, to just snap their fingers and make champions. It's not simple, and anyone who thinks it is hasn't really looked underneath the hood to see how the engine works.

Getting to number one in the world without a coach is highly unlikely.

Fear is an interesting energy that we all have to face. Some people step up and aren't afraid but still come up short. And some would rather cop out: "My shoulder hurts" or "I didn't give it my all." They can sleep at night.

It's really easy to find your friends when you're playing away. You have a close-knit group with you and everyone else is cheering hard for their side. There's more satisfaction coming away with a road victory.

Trophies separate the winners from losers, and life is about winning and losing. Go into business and you see. You're competing every day.

You have to look at each tie and look at what your options are.

One of Nadal’s strengths is that he’s so humble, that he’s surprised at what he has achieved, and that he has never bought into his greatness.