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    vs.      
Chuan Sun is tied in the series against Toshiharu Niwa, 1-1.

event round table player one result player two
Grand Prix Beijing 2016774Sun, Chuan (1731)Won 2-0Niwa, Toshiharu (1661)
Grand Prix Shanghai 20177134Sun, Chuan (1983)Lost 0-2Niwa, Toshiharu (1530)