Otsuka, Seiji
Current rating: 1439
Record: 3-6
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 193 | Matsuyama, Satoshi (1447) | Lost 1-2 | -191481 |
| 2standard | 312 | Kojima, Fumiya (1431) | Lost 0-2 | -191462 |
| 3standard | 393 | Wakae, Akio (1358) | Lost 1-2 | -201442 |
| 4standard | 422 | Takeda, Mayumi (1365) | Won 2-0 | +171459 |
| 5standard | 377 | Ohtsu, Yuya (1464) | Won 2-1 | +181477 |
| 6standard | 327 | Kawakami, Hiroshi (1452) | Won 2-0 | +171494 |
| 7standard | 207 | Okuyama, Tatsunori (1497) | Lost 1-2 | -171477 |
| 8standard | 229 | Satou, Kenji (1476) | Lost 0-2 | -181459 |
| 9standard | 193 | Arakane, Daisuke (1374) | Lost 0-2 | -201439 |
| average opponent: 1429record: 3-6 | new rating: 1439 | |||