Haffey, Nelson
Current rating: 1538
Record: 4-3
| Grand Prix Boston 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 21 | Sussino, Tim (1500) | Won 2-0 | +181518 |
| 2extended | 48 | Schofield, Bryan (1623) | Won 2-1 | +201538 |
| 3extended | 21 | Meadors, John (1603) | Lost 0-2 | -171521 |
| 4extended | 117 | Sinacola, Jonas (1518) | Won 2-1 | +181539 |
| 5extended | 72 | Shvartsman, Alex (1812) | Won 2-1 | +231562 |
| 6extended | 80 | Fabiano, Gerard (1902) | Lost 0-2 | -121550 |
| 7extended | 123 | Fujita, Tsuyoshi (1891) | Lost 1-2 | -121538 |
| average opponent: 1693record: 4-3 | new rating: 1538 | |||