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    vs.      
Hayato Ishii is tied in the series against Ren Ishikawa, 1-1.

event round table player one result player two
Grand Prix Yokohama 20037100Ishii, Hayato (1573)Won 2-1Ishikawa, Ren (1684)
Grand Prix Kobe 2008510Ishii, Hayato (1600)Lost 1-2Ishikawa, Ren (1881)