McCarthy, Billy
Current rating: 1409
Record: 0-5-1
| Grand Prix Boston 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 199 | Lyons, Paul (1497) | Lost 0-2 | -181482 |
| 2extended | 278 | Hodnett, James (1429) | Lost 0-2 | -191463 |
| 3extended | 274 | Fiorillo, Nicholas (1465) | Lost 0-2 | -181445 |
| 4extended | 309 | Civian, Greg (1446) | Lost 0-2 | -181427 |
| 5extended | 274 | Chau, David (1428) | Lost 0-2 | -181409 |
| 6extended | 232 | Christiansen, Nico (1427) | Draw 0-0 | 01409 |
| average opponent: 1449record: 0-5-1 | new rating: 1409 | |||