| event | round | table | player one | result | player two |
| Grand Prix Kyoto 2003 | 1 | 188 | Okuda, Masateru (1520) | Lost 1-2 | Ishii, Hayato (1503) |
| Grand Prix Yokohama 2003 | 10 | 86 | Okuda, Masateru (1589) | Won 2-0 | Ishii, Hayato (1601) |
| Grand Prix Yokohama 2012 | 1 | 319 | Okuda, Masateru (1512) | Lost 0-2 | Ishii, Hayato (1780) |