Osaki, Fumihiko
Current rating: 1477
Record: 2-3
| Grand Prix Yokohama 2010 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 31 | Kasahara, Yuuki (1403) | Lost 1-2 | -201480 |
| 2extended | 315 | Takahashi, Ryou (1351) | Won 2-1 | +161496 |
| 3extended | 319 | Kaizu, Hareta (1501) | Won 2-1 | +181514 |
| 4extended | 180 | Hori, Tetsuya (1505) | Lost 1-2 | -181496 |
| 5extended | 234 | Natsume, Takuya (1452) | Lost 0-2 | -191477 |
| average opponent: 1442record: 2-3 | new rating: 1477 | |||