The week before the (US Open) I gave a few interviews for CNN, USA Network, New York Times, USA Today and Sports Illustrated which had been arranged beforehand. The reason for giving these interviews is not only because working with the media is just part of the job, it is much more my desire to contribute to the promotion of tennis in the U.S.

I don't know how you can go through a four-hour match with Rafa and he never gets a time violation.

Early in my career, I struggled with consistency, but I couldn't get more consistent than this year.

Having twin girls is a life changer - that's for sure. But I like getting up and changing diapers. It's the things you do.

Before, I guess, mum and dad were everything, but now, in my case, I had two new girls and all of a sudden they're completely dependent on you and there's a third generation. It's a funny shift all of a sudden. You have the babies, you have yourself and then you have your parents.

You can't expect yourself to be already peaking like crazy in an exhibition tournament.

The serve, I think, is the most difficult, you know, in terms of coordination, because you got the two arms going, and you got to toss it up at the right time so.