Intro:

Players react on Thursday (28th August) after day four matches at the U.S. Open.

Script:

SOUNDBITE: (English) Novak Djokovic (on facing American Sam Querrey in the next round):

"Well, it's logical to expect that, you know, every next match that you play in a Grand Slam will get tougher. I mean, Sam is playing in front of his crowd. I'm sure that he's going to have some good support. But on the other hand, if we get to play on centre court maybe night session, that's where my experience kicks in, I think. I have had a lot of matches, night sessions if we get to play, as I said, and try to neutralise his serve that is his big weapon. If he serves well he's very dangerous. I saw a little bit of his match today and he played great. He's in good form, good shape, and has nothing to lose. It's going to be a tough one."