Matsumoto, Koichi
Current rating: 1463
Record: 0-2-1
| Grand Prix Yokohama 2004 (COK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 250 | Itou, Takuma (1603) | Lost 0-2 | -161484 |
| 2sealed | 268 | Adachi, Hikaru (1411) | Draw 1-1 | -11483 |
| 3sealed | 265 | Yasukawa, Kazuhide (1382) | Lost 1-2 | -201463 |
| average opponent: 1465record: 0-2-1 | new rating: 1463 | |||