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    vs.      
Hiroaki Kitahara is tied in the series against Kei Umehara, 1-1.

event round table player one result player two
Grand Prix Kitakyushu 20092106Kitahara, Hiroaki (1469)Won 2-1Umehara, Kei (1491)
Grand Prix Shizuoka 20172485Kitahara, Hiroaki (1818)Lost 0-2Umehara, Kei (1751)