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