I like my groundstrokes, I can say. I like it. That's my game - I'm a groundstroke player and I play pretty aggressive.

The fact that nobody played tennis in my family and you'd say by chance they make three tennis courts in front of the restaurant that my family owned when I was 4, I think that's a destiny. That's kind of life circumstances that kind of come together for you to become who you want to become.

I have been through two wars in my 24 years, and I know what it's like to be without anything, to see the bombs flying above your head.

Well, I do feel that I carry the responsibility of representing my country wherever I am, and this responsibility came with the success that I had in last couple of years, not just myself but the whole group of tennis players that comes from Serbia. And athletes in general are, in this moment, the biggest ambassadors that our country has.

Tennis players we're always playing in center courts that feel like arenas. And when we get on the court and the crowd cheers your name or salutes you - it's like you're a gladiator in the arena. And everyone is cheering - and you're fighting, you're screaming, during your strokes - it feels like you're an animal, fighting for your life.

I'm trying to enjoy my lie as much as I can and I know that tennis hopefully is going to be my life the next 10, 15 years.

It was very unusual for a boy to play tennis in my country.