Masahiko Morita trails the series against
Itaru Ishida, 2-3-1.
| event |
round |
table |
player one |
result |
player two |
| Grand Prix Hiroshima 2001 | 6 | 5 | Morita, Masahiko (1548) | Lost 1-2 | Ishida, Itaru (1591) |
| Grand Prix Sendai 2001 | 8 | 3 | Morita, Masahiko (1808) | Lost 1-2 | Ishida, Itaru (1813) |
| Grand Prix Sapporo 2002 | S | | Morita, Masahiko (1833) | Won 2-1 | Ishida, Itaru (1878) |
| Grand Prix Niigata 2005 | 11 | 6 | Morita, Masahiko (2037) | Won 2-0 | Ishida, Itaru (2019) |
| Grand Prix Kitakyushu 2005 | 8 | 1 | Morita, Masahiko (2094) | Draw 1-1 | Ishida, Itaru (2063) |
| Grand Prix Kyoto 2007 | 8 | 3 | Morita, Masahiko (2025) | Lost 0-2 | Ishida, Itaru (1878) |