Haffner, David L
Current rating: 1465
Record: 0-2-1
| Grand Prix Columbus 2007 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 202 | Diefendorf, Brian (1542) | Draw 1-1 | +11501 |
| 2legacy | 239 | Keil, Brian J (1501) | Lost 0-2 | -181483 |
| 3legacy | 334 | Pate, Joe (1507) | Lost 0-2 | -181465 |
| average opponent: 1516record: 0-2-1 | new rating: 1465 | |||