Matushita, Masakazu(KG)
Current rating: 1487
Record: 3-4
| Grand Prix Yokohama 2004 (COK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 40 | Ito, Ken (1629) | Lost 1-2 | -161484 |
| 3sealed | 244 | Yamada, Tsutomu (1606) | Lost 1-2 | -151469 |
| 4sealed | 277 | Ikawa, Yoshihiko (1489) | Lost 0-2 | -181451 |
| 5sealed | 226 | Oshimi, Akira (1467) | Won 2-0 | +181469 |
| 6sealed | 181 | Park, Jun Young (1462) | Lost 0-2 | -181451 |
| 7sealed | 158 | Katsumata, Chihiro (1429) | Won 2-0 | +181469 |
| 8sealed | 67 | Kaneko, Takaoki (1481) | Won 2-0 | +181487 |
| average opponent: 1509record: 3-4 | new rating: 1487 | |||