Iwaoka, Makio
Current rating: 1450
Record: 4-7
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 32 | Yamada, Uchu (1425) | Lost 1-2 | -191446 |
| 2standard | 326 | Nishiwaki, Yousuke (1519) | Won 2-1 | +201466 |
| 3standard | 343 | Miura, Yushiro (1464) | Won 2-0 | +181484 |
| 4standard | 155 | Ozawa, Takeshi (1509) | Won 2-1 | +181502 |
| 5standard | 178 | Kawamura, Kazushi (1644) | Lost 0-2 | -151487 |
| 6standard | 233 | Aizawa, Yuuichi (1445) | Lost 0-2 | -191468 |
| 7standard | 233 | Toyama, Kazuaki (1500) | Won 2-1 | +191487 |
| 8standard | 190 | Yamaguchi, Yuuichi (1452) | Lost 0-2 | -191468 |
| 9standard | 177 | Satou, Kenji (1494) | Lost 0-2 | -181450 |
| average opponent: 1495record: 4-5 | new rating: 1450 | |||
| Grand Prix Sendai 2004 (DST limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 121 | Fujieda, Isamu (1526) | Lost 1-2 | -181482 |
| 2sealed | 155 | Sugiura, Kiyohiro (1520) | Lost 1-2 | -171465 |
| average opponent: 1523record: 0-2 | new rating: 1465 | |||