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.

I always try to have something that keeps my mind relaxed, keeps my mind a little bit off tennis.

It's always easier if you have the support of your family, if you're not alone. I came from a country that has been through a lot of troubles in the last 20 to 30 years, but we have been through them together.

I cannot guarantee anything.

In order to stay where I am - and I want to do that - I have to stay dedicated as well as I have been before I became No. 1.

I think if you do not enjoy your time, your life, if you do not live intensely and do not spend time with your family, in one way or another it will be reflected in your career.

I'm trying not to pay too much attention to the rankings because calculations can distract you.