Plurkowski, Jack
Current rating: 1442
| Grand Prix Sacramento 2018 (M19 limited) | starting rating: 1397 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 298 | Roles, Travis (1519) | Lost 0-2 | -161381 |
| 2sealed | 443 | Allen, Tristan (1428) | Won 2-0 | +191400 |
| 3sealed | 499 | Rubin, Everett (1499) | Lost 1-2 | -161384 |
| 4sealed | 539 | Turner, Joseph (1480) | Won 2-0 | +201404 |
| 5sealed | 461 | James, Stuart (1495) | Won 2-0 | +191423 |
| 6sealed | 327 | Guggemos, Logan (1516) | Lost 0-2 | -161407 |
| 7sealed | 321 | Trendall, Tim (1316) | Won 2-0 | +161423 |
| 8sealed | 250 | Kiepert, Kyle (1480) | Won 2-1 | +191442 |
| top | average opponent: 1467record: 5-3 | new rating: 1442 | ||
| Grand Prix San Jose 2017 (AER limited) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 686 | Selivra, Andrej (1690) | Lost 0-2 | -141466 |
| 2sealed | 562 | Lopez, Derrek (1482) | Lost 0-2 | -181448 |
| 3sealed | 80 | Cade, Quan (1465) | Lost 0-2 | -181430 |
| 4sealed | 156 | Long, Nicholas (1453) | Lost 0-2 | -171413 |
| 5sealed | 828 | Maceda, Dj (1427) | Lost 1-2 | -181395 |
| 6sealed | 758 | Higgins, Luke (1464) | Lost 0-2 | -171378 |
| 7sealed | 667 | Rose, Justin (1391) | Won 2-0 | +191397 |
| 8sealed | 567 | Lemley, Robert (1409) | Won 2-0 | +181415 |
| 9sealed | 479 | Armstrong, Alex (1430) | Lost 0-2 | -181397 |
| top | average opponent: 1468record: 2-7 | new rating: 1397 | ||
| Grand Prix Portland 2016 (EMN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 101 | Wu, Sean (1500) | Won 2-1 | +181518 |
| 2standard | 22 | Weyer, Kevin (1516) | Won 2-1 | +181536 |
| 3standard | 275 | Spence, Benjamin (1535) | Lost 0-2 | -181518 |
| 4standard | 466 | Pearson, Matthew (1518) | Lost 0-2 | -181500 |
| 5standard | 501 | Hulaj, Stefan (1501) | Lost 0-2 | -181482 |
| 6standard | 588 | Thompson, Geoffrey (1418) | Won 2-1 | +171499 |
| 7standard | 476 | Rothenberg, Andru (1478) | Lost 0-2 | -191480 |
| 8standard | 440 | Curtiss, Kenneth (1432) | Lost 0-2 | -181462 |
| 9standard | 417 | Antonovich, Darren (1487) | Won 0-0 | +181480 |
| top | average opponent: 1487record: 4-5 | new rating: 1480 | ||