event | round | table | player one | result | player two |
Grand Prix Yamagata 2006 | 7 | 83 | Shiozu, Ryouma (1885) | Lost 0-2 | Saito, Tomoharu (1959) |
Grand Prix Kitakyushu 2007 | 8 | 1 | Shiozu, Ryouma (1805) | Won 2-1 | Saito, Tomoharu (2008) |
Grand Prix Kobe 2009 | Q | Shiozu, Ryouma (1914) | Lost 0-2 | Saito, Tomoharu (2128) |