Parker, John
Current rating: 1427
Record: 1-5-2
| Grand Prix Portland 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 275 | Baker, Nathan (1639) | Lost 0-2 | -151485 |
| 2modern | 649 | Bingham, Cody (1481) | Draw 1-1 | -11484 |
| 3modern | 726 | Morrison, Shawn (1479) | Lost 0-2 | -181466 |
| 4modern | 795 | Galarza, Andre (1429) | Lost 0-2 | -181448 |
| 5modern | 759 | Willson, Robert (1414) | Lost 0-2 | -191429 |
| 6modern | 659 | Butensky, Max (1424) | Draw 1-1 | 01429 |
| 7modern | 543 | Turner, Max (1328) | Won 2-0 | +161445 |
| 8modern | 431 | Winnwalker, Daniel (1444) | Lost 0-2 | -181427 |
| average opponent: 1455record: 1-5-2 | new rating: 1427 | |||