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.

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.

My priority, the most important thing in my life is my family, my wife and my son.

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.

My nutritionist has done a great job in changing my diet after we established I am allergic to things like gluten - I can't eat pizza, pasta and bread. I have lost some weight, but my movement is sharper and I feel great.

Obsession is a negative word, I do not think that obsession can bring positive things. Not only in tennis but, I mean in any situation of life.

My mother is a special story. She went through so much to bring us up, four men at home, especially when our country was going through really difficult times.