Angelique Keber of Germany returns a shot during the women's singles third round match against Petra Kvitova of the Czech Republic at 2016 WTA Wuhan Open tennis tournament in Wuhan, Hubei Province, Sept 28, 2016. [Photo/Xinhua]

14th-seeded Kvitova, the 2014 tournament champion, will next play 11th-seeded Johanna Konta, who reached the quarterfinals for the second consecutive year here after ousting NO 7 seed Carla Suarez Navarro of Spain, 7-5, 7-6(6).

NO4 seed Simona Halep moved smoothly into the last eight after a straight set win over Yaroslava Shvedova of Kazakhstan 6-3, 6-3.

The Romanian will meet America's Madison Keys, NO 8 seed, who dispatched Daria Kasatkina of Russia 6-1, 4-6, 6-4.