Guinn, David
Current rating: 1448
Record: 1-4
| Grand Prix Philadelphia 2005 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 92 | Litchard, Rian (1523) | Lost 0-2 | -181482 |
| 2legacy | 185 | Baboussis, George (1555) | Lost 0-2 | -161466 |
| 3legacy | 212 | Auld, Timmy (1463) | Won 2-0 | +181484 |
| 4legacy | 181 | Pacheco, Manuel (1493) | Lost 1-2 | -181466 |
| 5legacy | 204 | Guardiano, Patrick (1465) | Lost 0-2 | -181448 |
| average opponent: 1500record: 1-4 | new rating: 1448 | |||