event | round | table | player one | result | player two |
Grand Prix Kitakyushu 2007 | 11 | 29 | Kubo, Ryoutarou (1634) | Lost 0-2 | Mihara, Makihito (2104) |
Grand Prix Okayama 2008 | 14 | 23 | Kubo, Ryoutarou (1650) | Lost 0-2 | Mihara, Makihito (2076) |
Grand Prix Nagoya 2016 | 5 | 99 | Kubo, Ryoutarou (1663) | Won 2-0 | Mihara, Makihito (2040) |