| event | round | table | player one | result | player two |
| 2006 World Championship | 6 | 2 | Ishida, Itaru (1844) | Won 2-0 | Yamamoto, Shouhei (1670) |
| 2006 World Championship | 8 | 9 | Ishida, Itaru (1838) | Won 2-1 | Yamamoto, Shouhei (1673) |
| Grand Prix Kyoto 2007 | 4 | 54 | Ishida, Itaru (1819) | Won 2-1 | Yamamoto, Shouhei (1702) |