Parker, Don
Current rating: 1531
Record: 4-3
| Grand Prix Detroit 2019 (M20 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 4 | Knabusch Iii, Charles (1500) | Won 2-1 | +181518 |
| 2sealed | 1 | Kristoff, Daniel (1928) | Lost 0-2 | -111507 |
| 3sealed | 201 | Lesnewski, Dylan (1501) | Won 2-0 | +181525 |
| 4sealed | 91 | Pham, Hoang Ha (1561) | Lost 0-2 | -171508 |
| 5sealed | 198 | Hunt, Ethan (1510) | Won 2-0 | +181526 |
| 6sealed | 130 | Roti Roti, Joseph (1677) | Won 2-0 | +201546 |
| 7sealed | 88 | Opalka, Jason (1699) | Lost 0-2 | -151531 |
| average opponent: 1625record: 4-3 | new rating: 1531 | |||