Parker, Jack
Current rating: 1441
Record: 13-18
| Grand Prix Houston 2018 (RIX limited) | starting rating: 1411 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 81 | Maahs, Karl (1460) | Won 2-0 | +191430 |
| 2sealed | 203 | Jones, Mike (1561) | Won 2-0 | +201450 |
| 3sealed | 147 | Desangles, Anthony (1676) | Lost 0-2 | -141436 |
| 4sealed | 131 | Coleman, Chad (1509) | Won 2-0 | +191455 |
| 5sealed | 80 | Cappa, Robert (1540) | Lost 0-2 | -161439 |
| 6sealed | 215 | Greeson, Gary (1528) | Won 2-0 | +201459 |
| 7sealed | 163 | Snider, Keelan (1509) | Lost 1-2 | -181441 |
| top | average opponent: 1540record: 4-3 | new rating: 1441 | ||
| Grand Prix Manchester 2014 (Theros block) | starting rating: 1397 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 148 | Lauwers, Jelle (1452) | Lost 1-2 | -171380 |
| 2block | 413 | Baldry, Peter (1465) | Won 2-0 | +201400 |
| 3block | 514 | Stokes, Daniel (1500) | Won 2-0 | +201420 |
| 4block | 311 | Harle, Thomas (1790) | Won 2-0 | +241444 |
| 5block | 60 | De Swarte, Daniel (1488) | Lost 1-2 | -171427 |
| 6block | 355 | Coombes, Michael (1522) | Lost 1-2 | -161411 |
| top | average opponent: 1536record: 3-3 | new rating: 1411 | ||
| Grand Prix London 2013 (GTC limited) | starting rating: 1444 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 374 | Breeden, Adam (1500) | Lost 0-2 | -171427 |
| 2sealed | 563 | Barby, Matthew (1482) | Lost 0-2 | -171410 |
| 3sealed | 813 | Boulton, Keith J (1465) | Won 2-1 | +191429 |
| 4sealed | 626 | Lamesch, Matthias (1588) | Lost 0-2 | -151414 |
| 5sealed | 782 | Antoine, Guillaume (1468) | Won 2-1 | +191433 |
| 6sealed | 587 | Ratcliffe, Mark (1459) | Lost 0-2 | -181415 |
| 7sealed | 570 | Remon, David (1517) | Lost 0-2 | -161399 |
| 8sealed | 3 | Lott, Shana (1342) | Won 2-1 | +171416 |
| 9sealed | 395 | Luppi, Stefano (1381) | Lost 0-2 | -191397 |
| top | average opponent: 1467record: 3-6 | new rating: 1397 | ||
| Grand Prix Manchester 2012 (DKA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 538 | Court, Gordon (1394) | Lost 0-2 | -201480 |
| 2sealed | 585 | Stroud, Jamie (1481) | Won 2-0 | +181498 |
| 3sealed | 508 | Brundler, Alex (1537) | Lost 1-2 | -171481 |
| 4sealed | 582 | Stellings, Alexander (1410) | Lost 0-2 | -191462 |
| 5sealed | 608 | Stamper, James (1465) | Lost 0-2 | -181444 |
| 6sealed | 603 | Foster, Richard (1444) | Won 2-0 | +181462 |
| 7sealed | 572 | Nicholls, Samuel (1460) | Won 2-0 | +181480 |
| 8sealed | 533 | Scarpati, Matteo (1488) | Lost 0-2 | -181462 |
| 9sealed | 639 | Pass, Kevin (1465) | Lost 0-2 | -181444 |
| top | average opponent: 1460record: 3-6 | new rating: 1444 | ||