To win Grand Slams you have to be in the right frame of mind, the right physical shape.

I had an instinct before and maybe now I don't have that instinct as much as knowing what to do, what shots to hit, where to place the ball, things like that.

It doesn't matter whether I qualify or wildcards.

I just want to get to the level where I can say that that's my level, just try to play well, get up there.

She [Serena Williams] played some great shots, but so did I, and that was the only difference.

I'm happy with what I've done but it's a challenge to try to win more.

Tennis is what I do and is part of who I am.