Brierley, Don C
Current rating: 1414
| Grand Prix Nashville 2010 (SOM limited) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1 | Cerka, Jeremy (1500) | Lost 1-2 | -181448 |
| 2sealed | 208 | Brooks, John T (1482) | Lost 1-2 | -171431 |
| 3sealed | 285 | Schartz, Raymond A (1467) | Lost 1-2 | -171414 |
| top | average opponent: 1483record: 0-3 | new rating: 1414 | ||
| Grand Prix Columbus 2010 (legacy) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 61 | Ladouceur, Travis (1437) | Won 2-0 | +181463 |
| 2legacy | 90 | Downey, Shane (1322) | Lost 0-2 | -211442 |
| 3legacy | 109 | Click, Sean M (1499) | Won 2-0 | +191461 |
| 4legacy | 163 | Hill, Dan (1504) | Won 2-1 | +191480 |
| 5legacy | 86 | Brown, Justin C (1575) | Lost 1-2 | -161464 |
| 6legacy | 175 | Johnston, Eric S (1518) | Won 2-1 | +191483 |
| 7legacy | 106 | Roukas, Sam (1534) | Lost 1-2 | -171466 |
| top | average opponent: 1484record: 4-3 | new rating: 1466 | ||
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 339 | Hodnett, James (1444) | Lost 0-2 | -191481 |
| 2standard | 335 | Scixus, Edward (1482) | Lost 1-2 | -181463 |
| 3standard | 411 | Lutz, Gary (1464) | Lost 0-2 | -181445 |
| top | average opponent: 1463record: 0-3 | new rating: 1445 | ||