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    vs.      
Yuki Yotsumoto leads the series against Jun Ishihara, 2-0.

event round table player one result player two
Grand Prix Yokohama 2012135Yotsumoto, Yuki (1848)Won 2-0Ishihara, Jun (1815)
Grand Prix Kyoto 20197163Yotsumoto, Yuki (1896)Won 2-1Ishihara, Jun (1802)