I want to help children in Serbia and around the world so they can realize their dreams.

It's interesting that I had such a close relationship with my grandfather. Because your parents always judge you: they say, 'You shouldn't do this, you shouldn't do that.' But with your grandparents you have a feeling that you can say anything or you can do anything, and they will support you. That's why you have this kind of connection.

My father had never watched tennis, never liked tennis too much. He said, 'OK, we buy a racket, we watch together,' because we didn't know anything. It was a process of learning together that made it more interesting.

I want to win and I feel that pressure, but my career will not be a disaster if I do not win there. It is a dream to fulfill.

I embraced, I think, the process of becoming No. 1 of the world, which was long and difficult, but it's sweeter in the end.

I don't like to compare years, honestly. I think every year is a different experience, a different challenge. You grow. You evolve as a person and as a player.

I remember as a kid, I was improvising and making little trophies out of different materials and going in front of the mirror, lifting the trophies and saying 'Nole was the champion!'