Okamoto, Kouki
Current rating: 1392
Record: 0-6-1
| Grand Prix Okayama 2004 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 37 | Miyauchi, Toshiaki (1500) | Lost 1-2 | -181482 |
| 3extended | 127 | Kishishita, Kunihiko (1416) | Lost 1-2 | -191463 |
| 4extended | 137 | Tawa, Atsushi (1498) | Lost 1-2 | -181445 |
| 5extended | 167 | Moriya, Jun (1463) | Lost 0-2 | -171428 |
| 6extended | 148 | Takahara, Hitoki (1415) | Lost 0-2 | -181410 |
| 7extended | 122 | Toda, Satoshi (1428) | Lost 0-2 | -181392 |
| 8extended | 108 | Sato, Yuuki (1406) | Draw 1-1 | 01392 |
| average opponent: 1447record: 0-6-1 | new rating: 1392 | |||