Caroline Wozniacki recovered from a first-set collapse to beat Svetlana Kuznetsova in three sets to reach the Aegon International quarter-finals, as Eugenie Bouchard retired in her third-round match against Belinda Bencic.

Second seed Wozniacki - champion at Eastbourne in 2009 - emerged victorious 6-7 (3-7) 6-3 6-1.

It was not all plain sailing for the Dane, who surrendered a 5-1 first-set lead before falling to a 6-0 deficit in a tie-break that Kuznetsova wrapped up when her opponent put a backhand into the net.

Wozniacki quickly recovered to level the match at 1-1, before taking a 3-1 lead in the decider when Kuznetsova put a forehand wide.

Kuznetsova managed to stave off two break points in game six, but Wozniacki made no mistake with the third to take a double-break lead and she served out for the match at the first time of asking.

Wozniacki will meet Andrea Petkovic in the last eight after the German beat Coco Vandeweghe 6-3 6-4.

Seventh seed Bouchard, runner-up at Wimbledon in 2014, retired with an abdominal injury when trailing Bencic 6-4 3-0, but the Canadian vowed to be fit for SW19.

"I'm going to play no matter what, even if I'm on one leg," she said. "I will take a few days off from serving and give it a little break and see how it goes."

Bencic next comes up against Johanna Konta. The Australia-born British player - who picked up her first WTA Tour win over a top-10 player against Ekaterina Makarova on Tuesday - usurped 14th seed Garbine Muguruza 6-4 4-6 6-3.

The home fans were unable to celebrate double success, though, as Heather Watson crumbled to a 6-2 6-3 loss versus Sloane Stephens.

In other matches, 2008 champion Agnieszka Radwanska defeated eighth seed Karolina Pliskova 6-2 6-1, Daria Gavrilova overcame Sara Errani 6-1 5-7 6-2 and Tsvetana Pironkova came from behind to see off Dominika Cibulkova 6-7 (4-7) 6-4 6-1.