| event | round | table | player one | result | player two |
| Grand Prix Kyoto 2003 | 5 | 10 | Oiso, Masashi (1686) | Won 2-0 | Taru, Genki (1699) |
| Grand Prix Yamagata 2006 | 12 | 12 | Oiso, Masashi (1846) | Draw 1-1 | Taru, Genki (1721) |
| Grand Prix Kyoto 2007 | 5 | 18 | Oiso, Masashi (1857) | Lost 0-2 | Taru, Genki (1757) |