Martina Hingis of Switzerland (R Back), Sania Mirza of India (L Back), Zheng Saisai (Front R) and Xu Yifan of China compete during their women's doubles second round match at the WTA Qatar Open 2016 in Doha, Qatar, Feb. 23, 2016. Martina Hingis and Sania Mirza won 2-1. (Xinhua/Nikku)
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