Itaru Ishida trails the series against
Chikara Nakajima, 2-3.
| event |
round |
table |
player one |
result |
player two |
| Grand Prix Fukuoka 2002 | 12 | 8 | Ishida, Itaru (1887) | Won 2-0 | Nakajima, Chikara (1660) |
| Grand Prix Utsunomiya 2002 | 5 | 21 | Ishida, Itaru (1872) | Lost 0-2 | Nakajima, Chikara (1591) |
| Grand Prix Utsunomiya 2002 | 9 | 15 | Ishida, Itaru (1876) | Lost 1-2 | Nakajima, Chikara (1616) |
| Grand Prix Okayama 2004 | 8 | 1 | Ishida, Itaru (2026) | Won 2-0 | Nakajima, Chikara (1682) |
| Grand Prix Taipei 2005 | 5 | 50 | Ishida, Itaru (1989) | Lost 1-2 | Nakajima, Chikara (1638) |