Quackenbush, Dennis
Current rating: 1517
Record: 4-3
| Grand Prix Philadelphia 2005 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 153 | Loomis, Allen (1446) | Won 2-1 | +171517 |
| 2legacy | 6 | Aspinwall, Derek (1518) | Won 2-0 | +181535 |
| 3legacy | 21 | Huang, Don (1575) | Lost 0-2 | -171518 |
| 4legacy | 138 | Rogers, Roderick (1501) | Lost 0-1 | -191499 |
| 5legacy | 120 | Rubio, Christopher (1500) | Won 2-0 | +181517 |
| 6legacy | 123 | Aldrich, Paul (1518) | Won 2-0 | +181535 |
| 7legacy | 84 | Chillemi, Thomas (1508) | Lost 0-2 | -181517 |
| average opponent: 1509record: 4-3 | new rating: 1517 | |||