Ma Long, Xu Xin advance to men's singles round of 16 matches at German Open

China's Xu Xin serves during the men's singles round of 32 match against Poland's Jakub Dyjas at the 2018 ITTF World Tour Platinum German Open in Bremen, Germany, on March 23, 2018. Xu Xin won 4-2 and advanced to round of 16 matches. (Xinhua/Binh Truong)