There is no doubt about how hard it is to stay on top in any sport, but to do it in an individual sport for the majority of your career, it is not easy.

Baseball is America's pastime, and that record is absolutely huge in the States.

When you go through certain moments of your career and you're struggling, it just takes time. Time heals, when you're a little bit down.

It's one-on-one out there, man. There ain't no hiding. I can't pass the ball.

It is nice to walk out on a court to have it packed.

For so long people have just taken what I do for granted. It is not easy to do year-in, year-out, to win Grand Slams and be No. 1.

I am here for the goal, and the goal is to try to do it again.