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    vs.      
Kenji Tsumura leads the series against Koutarou Ootsuka, 4-2-1.

event round table player one result player two
Pro Tour Nagoya 2005587Tsumura, Kenji (1675)Lost 1-2Ootsuka, Koutarou (1736)
Grand Prix Matsuyama 20051018Tsumura, Kenji (1849)Won 2-1Ootsuka, Koutarou (1768)
Grand Prix Taipei 200553Tsumura, Kenji (1935)Draw 1-1Ootsuka, Koutarou (1722)
2005 World Championship1411Tsumura, Kenji (2134)Won 2-1Ootsuka, Koutarou (1838)
Grand Prix Singapore 2007118Tsumura, Kenji (2211)Lost 1-2Ootsuka, Koutarou (1872)
2008 World Championship167Tsumura, Kenji (1982)Won 2-0Ootsuka, Koutarou (2093)
Pro Tour Kyoto 2009185Tsumura, Kenji (2010)Won 1-0Ootsuka, Koutarou (2087)