| event | round | table | player one | result | player two |
| Grand Prix Sendai 2001 | 4 | 15 | Maki, Koichiro (1577) | Lost 0-1 | Ikeda, Kei (1686) |
| Grand Prix Shizuoka 2003 | 8 | 1 | Maki, Koichiro (1792) | Lost 1-2 | Ikeda, Kei (1610) |
| Grand Prix Sendai 2004 | 9 | 29 | Maki, Koichiro (1788) | Lost 0-2 | Ikeda, Kei (1676) |