Parrish, William
Current rating: 1539
Record: 5-3-1
| Grand Prix Oklahoma City 2017 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 211 | Ratliff, Jayke (1500) | Lost 1-2 | -181482 |
| 2modern | 436 | Broomhall, Jerry (1488) | Draw 1-1 | 01482 |
| 3modern | 568 | Bailey, Jack (1492) | Lost 0-2 | -181464 |
| 4modern | 630 | Triplett, Leslie (1449) | Won 2-0 | +181482 |
| 5modern | 520 | Rowlett, Michael (1498) | Won 2-0 | +181500 |
| 6modern | 407 | Dawes, Blake (1502) | Won 2-1 | +181518 |
| 7modern | 298 | Sanchez, Cesar (1511) | Won 2-1 | +181536 |
| 8modern | 197 | Ramos, Ismael (1600) | Won 2-0 | +191555 |
| 9modern | 131 | Gurrola, Elliott (1619) | Lost 0-2 | -161539 |
| average opponent: 1518record: 5-3-1 | new rating: 1539 | |||