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    vs.      
Tatsuya Kotouge leads the series against Ryuichiro Ishida, 1-0-1.

event round table player one result player two
Grand Prix Kitakyushu 2009552Kotouge, Tatsuya (1536)Won 2-0Ishida, Ryuichiro (1506)
Grand Prix Kobe 20153173Kotouge, Tatsuya (1749)Draw 1-1Ishida, Ryuichiro (1461)