| event | round | table | player one | result | player two |
| Grand Prix Niigata 2009 | 7 | 40 | Akita, Naoto (1581) | Lost 1-2 | Ishimaru, Ken (1701) |
| Grand Prix Nagoya 2016 | 8 | 81 | Akita, Naoto (1640) | Won 2-1 | Ishimaru, Ken (1816) |
| Grand Prix Kyoto 2019 | 2 | 192 | Akita, Naoto (1462) | Lost 0-2 | Ishimaru, Ken (1701) |