Intro:

Reaction after Kei Nishikori defeated Stan Wawrinka in their US Open quarter-final match on Wednesday.

Script:

SOUNDBITE (English): Stan Wawrinka, Was defeated by Kei Nishikori 6-3, 5-7, 6-7 (7-9), 7-6 (7-5), 4-6:

"Yeah, I wasn't playing my best game, for sure. I had some up and down. I was not quite happy with myself, but I think also because he was playing good. I think even if I had a lot of chance, after the match like that for more than four hours with so many up and downs, with tie-break, with everything, it's tough to come back on every point. But, yeah, for sure I could have broken in the second set. I think I had one game with some big chance at 3-3 or something like that, and that could have changed completely the match."

SOUNDBITE (English): Stan Wawrinka, Was defeated by Kei Nishikori 6-3, 5-7, 6-7 (7-9), 7-6 (7-5), 4-6:

"Today some moments was really, really good tennis. He was playing well. He was trying to take control of the point and trying to be real aggressive. That's his game. That's how he played against (Milos) Raonic, and we all know how he's playing. Yeah, at the end he was for sure better because he won the match."