Caroline Wozniacki of Denmark returns the ball during the women's singles 1st round match against Kiki Bertens of the Netherlands at WTA Qatar Open 2017 at the International Khalifa Tennis Complex of Doha, Qatar, Feb. 15, 2017.(Xinhua/Nikku)
Caroline Wozniacki of Denmark returns the ball during the women's singles 1st round match against Kiki Bertens of the Netherlands at WTA Qatar Open 2017 at the International Khalifa Tennis Complex of Doha, Qatar, Feb. 15, 2017.(Xinhua/Nikku)