The mental part of the game, being able to free up on the tennis court, is much easier said than done.

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

Nothing against the Olympics. I played in 2012 and it was an incredible experience. It's different for tennis players than for swimmers and track and field athletes. That's the pinnacle of their sport and not so much the pinnacle of tennis.

Usually I'm traveling for tennis, so the most important thing for me is to not get jet lag.

Our biggest events are the Grand Slams and are always going to be the Grand Slams.