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.

For me, I'm in the driver's seat; I'm No. 1 in the world. I've won the last couple of meetings, and I've won the big tournaments lately. Whoever comes, I'll try to beat him. But it's almost up to me to decide who's my rival, isn't it?

I'm playing great tennis. I'm enjoying the tour, having fun with the fans off the court. I'm loving it now.

I did all the right things in so many tournaments. But like I said, sometimes in sports it just goes the other way. Maybe you've already won so much that it evens it out a bit sometimes. I don't know.

My game is a lot about footwork. If I move well, I play well.

I have a very strong opinion. I'm absolutely against it. I'm against the challenge system. I'm for the way it is right now. Don't change that.

To handle that stardom, the red carpets, the photo shoots, people all of a sudden recognizing you and following you in everyday life, it's a bit weird. It's strange, and it can have funny effects on you in terms of do you like it or don't you like it. Some people run away from it, some people embrace it; I found a good middle ground.