World number one Novak Djokovic spoke after reaching the last eight of the Western and Southern Open in Cincinnati while Rafa Nadal crashed out.

Script: SOUNDBITE (English) Novak Djokovic:

"It was a solid first set, but whatever happened in the next 45 minutes, I don't want to remember it. Credit to him for playing some solid, consistent tennis, always making me play an extra shot, but many double faults, I wasn't on the court. I just lost intensity, lost concentration. Luckily for me I managed to bounce back, dig myself out of this hole I was in. Obviously tough conditions for both of us, very swirly on the court, not easy to serve, not easy to control the ball generally here in Cincinnati. The ball flies through the air very quickly, so it's not easy to really play some consistent tennis. You know, it's ups and downs, you've got to make that adjustment steps all the time, you've got to have the intensity in the legs because once you stop, I start making faults and it's what happened to me. But as I said I'll try to take the positives out of this match and the positive is the last six games of the match."

SOUNDBITE: (English) Rafael Nadal

"In a lot of the key moments of the year, a couple of matches that i should not have lost, this one is another one, its a little bit different to the others for sure, because the others i played bad, i didn't play with the right intensity, not the case today, so accept the loss, keep going, there is nothing more than i can say or do than keep going."