Campbell, Jason
Current rating: 1535
Record: 19-16-1
| Grand Prix Seattle 2019 (MH1 limited) | starting rating: 1607 | |||
| round | table | opponent (rating) | result | Δrating |
| A1sealed | 360 | Eleyet, Bryan (1846) | Lost 1-2 | -131594 |
| A2sealed | 540 | Roeder, Ryan (1436) | Lost 1-2 | -211573 |
| A3sealed | 438 | Aicega, Michael (1592) | Lost 0-2 | -181555 |
| A4sealed | 424 | Tobin, Patrick (1449) | Lost 0-2 | -201535 |
| top | average opponent: 1581record: 0-4 | new rating: 1535 | ||
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1603 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 349 | Maxey, Scott (1431) | Won 2-1 | +151618 |
| 2standard | 119 | Huynh, Eric (1605) | Lost 1-2 | -181600 |
| 3standard | 472 | Hobrla, Travis (1525) | Lost 0-2 | -201580 |
| 4standard | 664 | Miranda, Jonathan (1442) | Won 2-0 | +161596 |
| 5standard | 462 | Portune, Richard (1498) | Won 2-0 | +161612 |
| 6standard | 403 | Scholar, Curtis (1605) | Won 2-1 | +181630 |
| 7standard | 140 | Pariseau, Quinn (1534) | Won 2-1 | +161646 |
| 8standard | 174 | Tanforan, Jeremy (1578) | Lost 0-2 | -191627 |
| 9standard | 235 | Hooton, Patrick (1541) | Lost 0-2 | -201607 |
| top | average opponent: 1529record: 5-4 | new rating: 1607 | ||
| Grand Prix San Jose 2017 (AER limited) | starting rating: 1550 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 33 | Batts, Ryan (1500) | Won 2-1 | +171567 |
| 2sealed | 329 | Langford, Anthony (1552) | Lost 0-2 | -191548 |
| 3sealed | 519 | Chen, Michael (1622) | Won 2-0 | +201568 |
| 4sealed | 481 | Bieza, Scott (1519) | Won 2-1 | +171585 |
| 5sealed | 157 | Blum, Tyler (1886) | Lost 1-2 | -131572 |
| 6sealed | 449 | Woodward, Jonathan (1660) | Won 2-0 | +201592 |
| 7sealed | 187 | Ho, Jasper (1501) | Lost 1-2 | -201572 |
| 8sealed | 445 | Bern, Maxfield (1458) | Won 2-1 | +161588 |
| 9sealed | 297 | Nguyen, Travis (1598) | Won 2-1 | +181606 |
| 10draft | 196 | Nguyen, Kevin (1648) | Won 2-1 | +191625 |
| 11draft | 55 | Krestoff, Nickolas (1628) | Lost 0-0 | -181607 |
| 12draft | 79 | Schwartz, Michael (1506) | Won 2-0 | +161623 |
| 13draft | 91 | Cheng, Wei-hung (1594) | Won 2-1 | +181641 |
| 14draft | 36 | Jelin, Josh (1665) | Lost 1-2 | -181623 |
| 15draft | 99 | Rosario, Joel (1513) | Lost 0-2 | -201603 |
| top | average opponent: 1590record: 9-6 | new rating: 1603 | ||
| Grand Prix Las Vegas 2015 (1) (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 275 | Kim, Forrest (1500) | Won 2-1 | +181518 |
| 2sealed | 207 | Keith, James (1506) | Won 2-0 | +181536 |
| 3sealed | 84 | Herdman, William (1311) | Draw 1-1 | -41532 |
| 4sealed | 102 | Lau, Moses (1535) | Won 2-1 | +181550 |
| 5sealed | 52 | Harris, Maxwell (1565) | Lost 1-2 | -181532 |
| 6sealed | 114 | Engseth, Kine (1484) | Won 2-0 | +171549 |
| 7sealed | 71 | Cozzoli, Kevin (1555) | Won 2-1 | +181567 |
| 8sealed | 42 | Quinn, Serena (1584) | Lost 0-2 | -171550 |
| top | average opponent: 1505record: 5-2-1 | new rating: 1550 | ||