Posey, Jason
Current rating: 1510
Record: 3-3
| Grand Prix Washington DC 2019 (MH1 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 163 | Holcomb, Michael (1620) | Won 2-1 | +201520 |
| 2sealed | 66 | Rodriguez, Thomas (1617) | Lost 0-0 | -161504 |
| 3sealed | 340 | Jayne, William (1500) | Won 2-1 | +181522 |
| 4sealed | 364 | Kaska, Chris (1565) | Lost 0-2 | -171505 |
| 5sealed | 362 | Price, Timothy (1464) | Won 2-0 | +171522 |
| 6sealed | 182 | Phraner, Ryan (1843) | Lost 0-2 | -121510 |
| average opponent: 1601record: 3-3 | new rating: 1510 | |||