| event | round | table | player one | result | player two |
| Grand Prix Kyoto 2003 | 13 | 15 | Ikeda, Tsuyoshi (1749) | Won 2-0 | Yamamoto, Akimasa (1645) |
| Grand Prix Okayama 2008 | Q | Ikeda, Tsuyoshi (1869) | Won 2-0 | Yamamoto, Akimasa (1841) | |
| Grand Prix Kobe 2009 | 8 | 63 | Ikeda, Tsuyoshi (1887) | Won 2-0 | Yamamoto, Akimasa (1923) |
| Grand Prix Niigata 2009 | 13 | 28 | Ikeda, Tsuyoshi (1867) | Won 2-0 | Yamamoto, Akimasa (1950) |
| Grand Prix Kitakyushu 2009 | 11 | 22 | Ikeda, Tsuyoshi (2093) | Won 2-0 | Yamamoto, Akimasa (1883) |