(Reuters) - Former world number one Garbine Muguruza was beaten 7-5 6-4 by Aryna Sabalenka in the China Open second round on Tuesday while an ailing Jelena Ostapenko lost 6-0 6-0 to Wang Qiang.
Sabalenka, who claimed her second title of the season at the Wuhan Open last week, edged a tight opening set and the Belarusian took control in the next to overpower Spaniard Muguruza and secure victory in an hour and 46 minutes.
Former French Open champion Ostapenko struggled with a wrist injury before losing to local hope Wang in 55 minutes.
Guangzhou champion Wang, who has won 14 of her last 17 matches, next plays former world number one Karolina Pliskova or Aliaksandra Sasnovich.
World number three Angelique Kerber fought back from 5-3 down in the first set to beat Carla Suarez Navarro 7-6(4) 6-1.
U.S. Open champion Naomi Osaka crushed Danielle Collins 6-1 6-0 to set up a clash with 10th seed Julia Goerges who beat the Japanese the last time they met in Charleston this season.
American Sloane Stephens took advantage of an error-prone display by China's Zheng Saisai to win 6-1 6-3 and set up a clash with Dominika Cibulkova who beat Daria Gavrilova 6-3 6-3.
(Reporting by Manas Mishra in Bengaluru, editing by Ed Osmond)