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.

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.

... the winner is the one who believes in victory more.

I'm very fortunate to have the support of the people around me, I feel happy because my wife helps me and people who are close.

Tennis is my life, obviously; I need to focus, I need to win. But it's not the only thing. I'm not going to play forever.

I am grateful to life. And also to the people who have brought me here. Without them, I could not be where I am now.

Those born into poverty or on the margins of society require our extra support to realize their dreams.