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    vs.      
Taisuke Ishii leads the series against Masashi Oiso, 2-1.

event round table player one result player two
Grand Prix Kitakyushu 20091048Ishii, Taisuke (1803)Won 2-0Oiso, Masashi (1955)
Grand Prix Kitakyushu 20091223Ishii, Taisuke (1838)Lost 0-2Oiso, Masashi (1953)
Grand Prix Kitakyushu 2009FIshii, Taisuke (1843)Won 2-1Oiso, Masashi (2014)