Mukumoto, Akihiro
Current rating: 1407
Record: 1-6-1
| Grand Prix Okayama 2004 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 75 | Okada, Masami (1488) | Lost 0-2 | -181482 |
| 2extended | 131 | Doi, Fumiaki (1460) | Lost 0-2 | -191463 |
| 3extended | 168 | Shibata, Keigo (1475) | Lost 0-2 | -171446 |
| 4extended | 184 | Uematsu, Kei (1444) | Won 2-1 | +181464 |
| 5extended | 163 | Sibata, Masaki (1466) | Lost 0-2 | -181446 |
| 6extended | 153 | Shiba, Norihito (1398) | Draw 1-1 | -11445 |
| 7extended | 121 | Kikuchi, Osamu (1416) | Lost 0-2 | -191426 |
| 8extended | 107 | Arakane, Daisuke (1374) | Lost 0-2 | -191407 |
| average opponent: 1440record: 1-6-1 | new rating: 1407 | |||