Hayhurst, Brian
Current rating: 1366
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1433 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 390 | Masters, Chase (1500) | Lost 1-2 | -171416 |
| 2modern | 843 | Bigelow, Clair (1530) | Lost 0-2 | -161400 |
| 3modern | 1192 | Marvin, Christopher (1416) | Lost 1-2 | -181382 |
| 4modern | 1211 | Doherty, Torren (1442) | Lost 0-2 | -161366 |
| top | average opponent: 1472record: 0-4 | new rating: 1366 | ||
| Grand Prix Charlotte 2015 (modern) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1479 | Taylor, Cody A (1500) | Won 2-0 | +191465 |
| 2modern | 1356 | Holman, John C (1518) | Lost 1-2 | -171448 |
| 3modern | 1444 | Duenas, James K (1502) | Won 2-1 | +191467 |
| 4modern | 1461 | Carrick, Emily (1515) | Lost 1-2 | -171450 |
| 5modern | 1282 | Thompson, Bradley J (1484) | Lost 0-2 | -171433 |
| top | average opponent: 1504record: 2-3 | new rating: 1433 | ||
| Grand Prix Richmond 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 474 | Morgan, Trevyn (1522) | Lost 0-2 | -181482 |
| 2modern | 433 | Moran, Eric (1449) | Lost 0-2 | -181464 |
| 3modern | 54 | Dean, David (1500) | Lost 0-2 | -181446 |
| top | average opponent: 1491record: 0-3 | new rating: 1446 | ||