I think there are still better players than me.

Me, I don't want to put the pressure on myself.

Sometimes I play good shots, good rallies, and then there is hundreds of mistakes and not a good shot.

Maybe America hates me.

I know the world is mean, that there is so much suffering on the planet that none of us can imagine. I often think of those who have nothing, who have to suffer every day, so a winner, a game, set, match will never give me immense joy, only satisfaction.

To beat Serena, she's world No. 1, so it's always tough to beat someone like this. She's never giving up. Even if she's losing, not playing her best, it's always tough to beat girls like this.

Obviously I need a coach, but it's not the main thing in my team. I can play good even without a coach.

It's a plus to have a twin sister in the same tournaments.

It's not great to look up and your sister is down 3-0. But you have to look; it's my sister.

If I serve good and play aggressive from the baseline, I can beat everyone.