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Germany's Timo Boll reacts during the men's singles quarterfinal match against China's Ma Long at the 2018 ITTF World Tour Platinum German Open in Bremen, Germany, on March 24, 2018. Timo Boll lost 1-4. (Xinhua/Binh Truong)
Germany's Timo Boll reacts during the men's singles quarterfinal match against China's Ma Long at the 2018 ITTF World Tour Platinum German Open in Bremen, Germany, on March 24, 2018. Timo Boll lost 1-4. (Xinhua/Binh Truong)