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Germany's Angelique Kerber serves during the women's singles quarterfinal match against Romania's Simona Halep at the French Open Tennis Tournament 2018 in Paris, France on June 6, 2018. Kerber lost 1-2. (Xinhua/Luo Huanhuan)
Germany's Angelique Kerber serves during the women's singles quarterfinal match against Romania's Simona Halep at the French Open Tennis Tournament 2018 in Paris, France on June 6, 2018. Kerber lost 1-2. (Xinhua/Luo Huanhuan)