I learned English in one month. I told myself I should listen. In the next month I could talk to everyone. I was so happy because I could do one thing...I could talk.

I think when you have surgery on any part of your body, it's never going to be the same.

My main goal is to stay healthy because when you're injured you realise how lucky you are to have your health.

People always ask about young people like me being forced into things. I play tennis because I love it. I think Russians might be tougher than other people. When I arrived in America I was young, but I already knew what I wanted. I think that when you start from nothing, when you come from nothing, it makes you hungry. I am proud of where I came from and I know what I want. I want to win.

I owe a lot to my parents.

I love where I'm from. I don't live there because of the circumstances, but all my family is there. It's what's inside, it's not what's outside that determines the culture and the feeling.

My next goal is to be number one in the world.