Chinese Tapei's Chuang Chih-yuan loses to Germany's Timo Boll 3-4 at German Open

Germany's Timo Boll serves during the men's singles round of 16 match against Chinese Tapei's Chuang Chih-yuan at the 2018 ITTF World Tour Platinum German Open in Bremen, Germany, on March 24, 2018. Timo Boll won 4-3 and advanced to quarterfinals. (Xinhua/Binh Truong)?