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    vs.      
Hiroya Shimada leads the series against Sadaharu Yamasaki, 2-0.

event round table player one result player two
Grand Prix Kitakyushu 200921Shimada, Hiroya (1613)Won 2-0Yamasaki, Sadaharu (1408)
Grand Prix Hiroshima 20112178Shimada, Hiroya (1623)Won 2-1Yamasaki, Sadaharu (1319)