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    vs.      
Akimasa Yamamoto is tied in the series against Naoki Kubouchi, 1-1.

event round table player one result player two
Grand Prix Okayama 20081012Yamamoto, Akimasa (1831)Won 2-0Kubouchi, Naoki (1735)
Grand Prix Sendai 20106248Yamamoto, Akimasa (1767)Lost 0-2Kubouchi, Naoki (1726)