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    vs.      
Masakazu Oosaki is tied in the series against Hiroyuki Kawada, 1-1.

event round table player one result player two
Grand Prix Kyoto 20191331Oosaki, Masakazu (1450)Lost 1-2Kawada, Hiroyuki (1264)
Grand Prix Nagoya 20205713Oosaki, Masakazu (1501)Won 2-0Kawada, Hiroyuki (1285)