Kristina Mladenovic (R) of France and Timea Babos of Hungary compete during the women's doubles semi-final match against Zhang Shuai of China and Samantha Stosur of Australia at the 2018 US Open tennis tournament in New York, the United States, Sept. 6, 2018. Babos and Mladenovic won 2-0. (Xinhua/Liu Jie)