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