Jansen, Peter
Current rating: 1446
Record: 3-6
| Grand Prix Philadelphia 2008 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 43 | Larson, Aaron (1496) | Lost 0-2 | -181482 |
| 2extended | 390 | Lo, Ryan H (1481) | Lost 1-2 | -181464 |
| 3extended | 397 | Patterson, Luke (1466) | Lost 0-2 | -181446 |
| 4extended | 444 | Decker, Daniel (1446) | Won 2-0 | +181464 |
| 5extended | 383 | Babish, Jeff (1464) | Lost 0-2 | -181446 |
| 6extended | 338 | Sim, Richard (1449) | Won 2-1 | +181464 |
| 7extended | 279 | Trice, Jason (1464) | Won 2-0 | +181482 |
| 8extended | 204 | Stewart, Jeffrey J (1466) | Lost 0-2 | -181464 |
| 9extended | 173 | Alsept, Donald (1495) | Lost 1-2 | -181446 |
| average opponent: 1470record: 3-6 | new rating: 1446 | |||