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    vs.      
Hirotaka Kubo is tied in the series against Isamu Komatsu, 1-1.

event round table player one result player two
Grand Prix Nagoya 20167446Kubo, Hirotaka (1518)Won 2-0Komatsu, Isamu (1558)
Grand Prix Chiba 20189173Kubo, Hirotaka (1611)Lost 1-2Komatsu, Isamu (1596)