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    vs.      
Naoki Kubouchi is tied in the series against Yasufumi Sasahara, 1-1.

event round table player one result player two
Grand Prix Yokohama 20031254Kubouchi, Naoki (1640)Lost 0-2Sasahara, Yasufumi (1583)
Grand Prix Shizuoka 2003293Kubouchi, Naoki (1650)Won 2-1Sasahara, Yasufumi (1654)