Perkins, Justin
Current rating: 1373
| Grand Prix Seattle 2018 (legacy) (legacy) | starting rating: 1424 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 124 | Wellman, Andrew (1500) | Lost 0-2 | -161408 |
| 2legacy | 434 | Cowley, Nick (1411) | Lost 0-2 | -181390 |
| 3legacy | 775 | Glenn, Brian1443 (1432) | Lost 0-2 | -171373 |
| top | average opponent: 1448record: 0-3 | new rating: 1373 | ||
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1450 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 439 | Gordon, Christopher (1650) | Lost 1-2 | -141436 |
| 2standard | 473 | Walker, Burch (1483) | Won 2-0 | +191455 |
| 3standard | 629 | Hadley, Justin (1507) | Lost 1-2 | -171438 |
| 4standard | 680 | Cummings, Brandon (1674) | Lost 1-2 | -141424 |
| 5standard | 738 | Sparling, Bryon (1466) | Won 2-0 | +191443 |
| 6standard | 537 | Miller, Wilson (1432) | Lost 0-2 | -191424 |
| top | average opponent: 1535record: 2-4 | new rating: 1424 | ||
| Grand Prix Portland 2016 (EMN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 137 | Parshall, Chris (1506) | Lost 0-2 | -181482 |
| 4standard | 236 | Bocale, Jordan (1517) | Lost 1-2 | -171465 |
| 5standard | 392 | Sloo, Felix (1466) | Won 2-0 | +181483 |
| 6standard | 241 | Dederich, Connor (1616) | Lost 0-2 | -161467 |
| 7standard | 396 | Yang, Kevin (1495) | Draw 1-1 | +11468 |
| 8standard | 419 | Parker, Allan (1501) | Lost 0-2 | -181450 |
| top | average opponent: 1517record: 1-4-1 | new rating: 1450 | ||