Parker, Johnathan
Current rating: 1444
Record: 2-6
| Grand Prix Las Vegas 2019 (modern) (modern) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 324 | Anaraki, BG (1521) | Won 2-1 | +191468 |
| 3modern | 18 | Nakao, Motohiko (1845) | Won 2-1 | +241492 |
| 4modern | 26 | Mosqueda, Daniel (1567) | Lost 0-2 | -161476 |
| 5modern | 299 | Maloney, Kevin (1661) | Lost 1-2 | -151461 |
| 6modern | 405 | Gumabon, Hercules (1498) | Lost 1-2 | -171444 |
| average opponent: 1618record: 2-3 | new rating: 1444 | |||
| Grand Prix Las Vegas 2018 (limited) (DOM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 464 | Robitaille, Luc (1511) | Lost 0-2 | -181482 |
| 2sealed | 634 | Wellons, Christopher J (1488) | Lost 1-2 | -181464 |
| 3sealed | 746 | Fatale, Alfred (1586) | Lost 0-2 | -151449 |
| average opponent: 1528record: 0-3 | new rating: 1449 | |||