I was very disappointed (at the U.S. Open), and I went out there and I worked really hard.

Sometimes when you're putting the work in it just seems so, so hard, and you never know when that work's going to pay off.

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

I definitely feel Russian inside, even when I'm in America I feel Russian.

If I loved a guy as much as I love my dog, the guy would be in serious trouble because I'm all over that dog, all of the time.

When I'm down or maybe when it's close in the match, I feel like I'm still in it. I don't feel like I'm letting down. Mentally, I'm still really, really tough.

I want my tennis to speak for everything.