| event | round | table | player one | result | player two |
| Pro Tour Los Angeles 2001 | 2 | 138 | Ishida, Itaru (1579) | Lost 1-2 | Ikeda, Tsuyoshi (1508) |
| Pro Tour Chicago 2003 | 5 | 52 | Ishida, Itaru (1921) | Won 2-1 | Ikeda, Tsuyoshi (1805) |
| Grand Prix Kyoto 2003 | 10 | 6 | Ishida, Itaru (1885) | Won 2-0 | Ikeda, Tsuyoshi (1768) |
| Grand Prix Niigata 2005 | 8 | 1 | Ishida, Itaru (2029) | Lost 1-2 | Ikeda, Tsuyoshi (1831) |
| 2005 World Championship | 11 | 44 | Ishida, Itaru (1981) | Lost 0-2 | Ikeda, Tsuyoshi (1808) |