People handle stress in different ways.

Focusing on one thing can be tough, and people with fewer options are more apt to concentrate on what they're doing. There's probably something to hunger.

Without a doubt, there's huge satisfaction when a relatively smaller nation can take on a bigger nation and defeat them. There's a lot of pride in that.

If they had rankings in baseball, maybe I would have been able to do the math and figure out my chances of being a professional baseball player versus a tennis player. But that was the decision-maker for me, I just thought I was better in tennis.

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.

If I had to choose one man to play for my life, it would be Nadal.

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.