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    vs.      
Changsu Kou is tied in the series against Shota Yasooka, 1-1.

event round table player one result player two
Grand Prix Kobe 201197Kou, Changsu (1735)Lost 1-2Yasooka, Shota (1981)
Grand Prix Yokohama 20121131Kou, Changsu (1752)Won 2-0Yasooka, Shota (2107)