Campbell, Gregg
Current rating: 1456
Record: 4-7
| Grand Prix Atlanta 2011 (extended) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 432 | Howell, Jesse (1500) | Won 2-0 | +191464 |
| 2extended | 502 | Draper, Barton (1517) | Lost 0-2 | -171447 |
| 3extended | 512 | Beacham, Mark (1502) | Won 2-1 | +191466 |
| 4extended | 563 | Barnard, Ryeland (1563) | Won 2-1 | +201486 |
| 5extended | 530 | Hayes, Ben (1862) | Lost 0-2 | -121474 |
| 6extended | 532 | Evans, Michael A (1474) | Lost 1-2 | -181456 |
| average opponent: 1570record: 3-3 | new rating: 1456 | |||
| Grand Prix Daytona Beach 2007 (LRW limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 27 | Davis, Sean (1483) | Lost 1-2 | -181482 |
| 2sealed | 169 | Martin, Seth (1481) | Won 2-0 | +181500 |
| 3sealed | 203 | Gerrish, Colby (1447) | Lost 0-2 | -191481 |
| 4sealed | 252 | Krauth, Sean P (1482) | Lost 1-2 | -181463 |
| 5sealed | 244 | Mckay, Daniel J (1463) | Lost 0-2 | -181445 |
| average opponent: 1471record: 1-4 | new rating: 1445 | |||