Peng Shuai retires from match in Malaysia with back injury

Shuai-Peng-of-China-serves-the-ball-to-Lesia-Tsurenko-of-Ukraine-during-the-Dubai-Tennis-Championships-in-Dubai,-United-Arab-Emirates,-Monday,-Feb.-20,-2017.-(Kamran-Jebreili/AP)

Shuai Peng of China serves the ball to Lesia Tsurenko of Ukraine during the Dubai Tennis Championships in Dubai, United Arab Emirates, Monday, Feb. 20, 2017. (Kamran Jebreili/AP)

KUALA LUMPUR, Malaysia — Fourth-seeded Peng Shuai retired from her match with a back injury Thursday at the Malaysian Open.

Peng was trailing 5-2 against Magda Linette of Poland when she withdrew.

Linette will next face fifth-seeded Duan Yingying in the quarter-finals. Duan beat Sara Sorribes Tormo of Spain 6-0, 4-6, 7-5.

Also advancing to the quarter-finals were Wang Qiang, Han Xinyun and Ashleigh Barty.

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