Pettie, Jacob
Current rating: 1480
Record: 2-3
| Grand Prix Washington DC 2019 (MH1 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 364 | Miller, Byron (1382) | Won 2-0 | +161516 |
| 2sealed | 98 | Williamson, Cliff (1563) | Lost 0-0 | -171499 |
| 3sealed | 363 | Lonegro, Frank (1508) | Lost 0-2 | -181481 |
| 4sealed | 468 | Focht, Daniel (1442) | Won 2-1 | +171498 |
| 5sealed | 405 | Grossman, Joseph (1508) | Lost 0-2 | -181480 |
| average opponent: 1480record: 2-3 | new rating: 1480 | |||