osmun, robert
Current rating: 1410
Record: 0-5
| Grand Prix Philadelphia 2008 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 160 | Yeager, Carson (1500) | Lost 1-2 | -181482 |
| 2extended | 295 | Sorrells, Joshua L (1482) | Lost 0-2 | -181464 |
| 3extended | 438 | Lin, Wei (1464) | Lost 0-2 | -181446 |
| 4extended | 453 | Francis, Chris (1446) | Lost 0-2 | -181428 |
| 5extended | 404 | Decker, Daniel (1428) | Lost 1-2 | -181410 |
| average opponent: 1464record: 0-5 | new rating: 1410 | |||