Campbell, Justin
Current rating: 1380
| Grand Prix Houston 2018 (RIX limited) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 236 | Cheng, Bob (1481) | Lost 0-2 | -171430 |
| 2sealed | 242 | Martinez, John (1483) | Lost 0-2 | -171413 |
| 3sealed | 416 | Scott, Michael (1492) | Won 2-0 | +191432 |
| 4sealed | 305 | Burton, Mark (1441) | Lost 1-2 | -181414 |
| 5sealed | 347 | Benson, Christine (1455) | Lost 0-2 | -171397 |
| 6sealed | 307 | Russell, Ian (1432) | Lost 0-2 | -171380 |
| top | average opponent: 1464record: 1-5 | new rating: 1380 | ||
| Grand Prix New Jersey 2017 (std) (AER standard) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 405 | Outman, Aaron (1500) | Won 2-0 | +191464 |
| 2standard | 173 | Victor, Adam (1890) | Lost 1-2 | -101454 |
| 3standard | 517 | Stearns, Scott (1449) | Lost 1-2 | -191435 |
| 4standard | 619 | Tunison, Drew (1709) | Won 2-1 | +231458 |
| 5standard | 123 | Stewart, Nyl (1465) | Lost 1-2 | -181440 |
| 6standard | 656 | Lill, Jake (1423) | Lost 1-2 | -181422 |
| 7standard | 578 | Flores, Michael (1551) | Won 2-1 | +201442 |
| 8standard | 508 | Abraham, Donivan (1645) | Lost 0-2 | -141428 |
| 9standard | 449 | Acosta, Joshua (1471) | Won 2-1 | +191447 |
| top | average opponent: 1567record: 4-5 | new rating: 1447 | ||
| Grand Prix Austin 2012 (ISD limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 57 | Keeney, Drew (1500) | Lost 0-2 | -181482 |
| 2sealed | 398 | Richner, Tammy S (1397) | Won 2-0 | +161498 |
| 3sealed | 292 | Donaldson, Chris (1520) | Lost 0-2 | -171481 |
| 4sealed | 359 | Shaver, Lee (1482) | Draw 1-1 | 01481 |
| 5sealed | 385 | Huct, Josh (1500) | Lost 1-2 | -181463 |
| 6sealed | 352 | Sowders, Thomas (1463) | Lost 0-2 | -181445 |
| top | average opponent: 1477record: 1-4-1 | new rating: 1445 | ||