Cox, Jack
Current rating: 1411
| Grand Prix Atlanta 2012 (legacy) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 153 | Alabrash, Adam (1554) | Lost 0-2 | -161446 |
| 2legacy | 276 | Schooley, Tiffany (1428) | Lost 1-2 | -191427 |
| 3legacy | 355 | Capalongan, Ronald (1501) | Draw 1-1 | +21429 |
| 4legacy | 420 | Ketel, Ben (1463) | Lost 0-2 | -181411 |
| top | average opponent: 1487record: 0-3-1 | new rating: 1411 | ||
| Grand Prix Atlanta 2011 (extended) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 81 | Gilliam, Beth (1500) | Lost 1-2 | -181499 |
| 2extended | 165 | Gallick, Keegan (1482) | Lost 0-2 | -191480 |
| 3extended | 241 | Sokoloff, Anson (1464) | Lost 1-2 | -181462 |
| top | average opponent: 1482record: 0-3 | new rating: 1462 | ||
| Grand Prix Nashville 2010 (SOM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 517 | Holland, Joe (1481) | Lost 0-2 | -181482 |
| 2sealed | 674 | Chwat, Stephen B (1482) | Won 2-0 | +181500 |
| 3sealed | 539 | Bolick, Robbie (1538) | Lost 0-2 | -181482 |
| 4sealed | 645 | Lancaster, Jeff D (1481) | Won 2-1 | +181500 |
| 5sealed | 655 | Hoffman, Ryan (1535) | Won 2-1 | +191519 |
| 6sealed | 559 | Ardary, Steven (1522) | Won 2-0 | +181537 |
| 7sealed | 517 | Suire, Ian (1428) | Lost 1-2 | -201517 |
| top | average opponent: 1495record: 4-3 | new rating: 1517 | ||