When I think of the Olympics I only think of good things. I think of what a great event it is and what it has done for me and my career, and changed my personal life, too.

I am a very positive thinker, and I think that is what helps me the most in difficult moments.

My heart is in South Africa, through my mum. My mum being from here, me spending a lot of time here as well, I feel most connected to this part of the world.

I've done so many interviews over the years in so many different languages. Radios. Papers. Magazines. There's always another interview to do. It's quite something, I have to say.

My family is the thing I miss most on the tour.

I can't stay No. 1 for fifty years, you know. We'll see what happens.

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