(210503) -- MADRID, May 3, 2021 (Xinhua) -- Simona Halep of Romania returns the ball during the women's singles 2nd round match against Zheng Saisai of China at the Madrid Open tennis tournament in Madrid, Spain, May 2, 2021.,Image: 609083894, License: Rights-managed, Restrictions: , Model Release: no, Credit line: Profimedia