Tennis has given me so many opportunities, and I feel very lucky to have achieved whatever I have, especially coming from a country that does not have a great history in the game.

Coaches were all saying that I was really talented and I had potential, but coming from Serbia, it wasn't easy. The '90s were the hardest years for our country - we went through two wars.

Everyone wants to be happy - people find happiness in different ways. While you want to pursue your career 100 percent, I think it is very hard to give 100 percent in something else. It's important to find this balance, and priorities change throughout life.

I think it's better not to mix professional life and personal life - although it is hard.

I'm a sports junkie, and I am interested in athletic will - how you exceed the expectations of your own performance when it counts to deliver something beyond yourself so that you can win.

I'm really happy to have been part of spreading the game of basketball and growing the game in a place like Turkey.

I'm riveted by extreme sports like big-wave surfing, 'megaramp' skateboarding and half-pipe snowboarding. I'm fascinated partly because the sports are so exhilaratingly acrobatic. But I'm also captivated by the fear that a terrible accident might happen at any moment. And accidents do happen.

I still speak with David Silva. We have a personal relationship, and we talk about personal things, but we've not got into football that much.