I've played with Prince racquets my entire career.

When I fly overseas, I usually fly business class. If not, my knees are going to be at my chin.

A lot of times when I'm confident and relaxed on the court, I'm going to be a pretty tough out. But when I'm not so confident and not so relaxed, I tense up and my balls fall short and everything. It just sort of unravels.

Tennis is a funny sport.

I have a coach and I have a chiropractor, who works to keep me healthy. I pay their salaries. I pay for their flights as we travel around the world on a weekly basis, and I pay for their hotels and meals while we're on tour.

Davis Cup is a completely different animal.

A lot of players have had it worse than me. Look at a guy like Andy Roddick, incredible Hall of Fame player, but he ran up against Roger so many times in big finals.

Taking care of my body and my health is my full-time job.

When I left college, I just thought I could play tennis to delay getting a regular job and go there and try to make ends meet. But it's been a very different experience for me, fortunately.

A big upper body is not a great thing for tennis, and for me, flexibility is important.

The best part about traveling for work is that it's better than sitting behind a desk!

I always knew that my best tennis was going to be in my late 20s.

You know, Slams are tough. It's the most physical, in my opinion. You're playing three out of five.

I try not to make a habit of spending the whole year losing in the first rounds of events, but tennis is one of those sports where nothing is guaranteed.

I've done a good job putting some meat on my bones since my freshman year of college. It's taken a lot of work. I was just under 200 pounds my freshman year; I was 6'8' and 198 pounds.

There are a lot of things that go on between the lines of a tennis court, mentally, physically and whatnot.

If someone had told me at fourteen that I'd be six-ten, I might have stuck with basketball, in all seriousness.

Everything has gone pretty fluidly in my personal life, so I think that certainly helps.

People think when you're struggling and not winning matches it's because you're not working hard. That's the biggest misnomer in tennis.

The hardest part about traveling for work is that I'm a big guy, so traveling is sometimes uncomfortable for me.

It's very important to be rested.

My theory is that I'm just closer to the sun than everyone else. I weigh more than everyone else, I'm taller than everyone else. When it's really humid and hot outside it's going to take a bigger toll on me.

I always have to play very aggressive on the court. It's something that's easier said than done.

I think the more matches that I play, the better shape I'm going to get in. That's the best type of fitness you can do.