Chambers, Justin
Current rating: 1478
| Grand Prix Orlando 2012 (ISD standard) | starting rating: 1514 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 3 | Harris, Andrew (1434) | Lost 0-2 | -201494 |
| 4standard | 186 | Thomas, Travis (1576) | Won 2-1 | +201514 |
| 5standard | 139 | Schwarz, Micheal (1517) | Lost 0-2 | -181496 |
| 6standard | 237 | Pascua, Brian (1518) | Lost 1-2 | -181478 |
| top | average opponent: 1512record: 1-3 | new rating: 1478 | ||
| Grand Prix Atlanta 2011 (extended) | starting rating: 1513 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 7 | Pennachio, Joe (1555) | Won 2-0 | +191532 |
| 3extended | 1 | Schweitzer, Kyle (1574) | Won 2-0 | +191551 |
| 4extended | 91 | Buck, Thomas (1507) | Draw 1-1 | -11550 |
| 5extended | 50 | McCurry, Christopher R (1539) | Lost 1-2 | -181532 |
| 6extended | 96 | Helton, Zac (1535) | Lost 1-2 | -181514 |
| top | average opponent: 1542record: 2-2-1 | new rating: 1514 | ||
| Grand Prix Tampa 2009 (ZEN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 133 | Borges, Bruno (1488) | Won 2-1 | +181518 |
| 3sealed | 74 | Boddy, Michael J (1571) | Won 2-1 | +191537 |
| 4sealed | 108 | Chenevert, Ryan (1550) | Lost 1-2 | -181519 |
| 5sealed | 189 | Bachmann, David (1644) | Won 2-1 | +201539 |
| 6sealed | 63 | Kibler, Brian (1995) | Lost 0-2 | -101529 |
| 7sealed | 87 | Lindo, Aaron (1635) | Lost 0-2 | -161513 |
| top | average opponent: 1647record: 3-3 | new rating: 1513 | ||