Parker, Grayson
Current rating: 1544
Record: 10-9-1
| Grand Prix Atlanta 2019 (legacy) | starting rating: 1553 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 62 | Mata, Andrew (1734) | Won 2-0 | +221575 |
| 4legacy | 12 | Hargett, Will (1658) | Lost 0-2 | -171558 |
| 5legacy | 194 | Achorn, Stephen (1847) | Won 2-1 | +231581 |
| 6legacy | 42 | Coval, Brian (1572) | Lost 0-2 | -181563 |
| 7legacy | 138 | Morriss, Bryan (1530) | Lost 1-2 | -191544 |
| top | average opponent: 1668record: 2-3 | new rating: 1544 | ||
| Grand Prix Seattle 2018 (legacy) (legacy) | starting rating: 1501 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 151 | Wong, Jason (1410) | Won 2-1 | +161517 |
| 2legacy | 136 | Sumulong, Miguel (1666) | Won 2-1 | +211538 |
| 3legacy | 237 | Mick, Maxwell (1793) | Won 2-0 | +221560 |
| 4legacy | 168 | Paulus, Cameron (1490) | Lost 0-2 | -191541 |
| 5legacy | 194 | Maxson, Ian (1503) | Won 2-0 | +171558 |
| 6legacy | 121 | Juza, Martin (2014) | Won 2-1 | +261584 |
| 7legacy | 29 | Demestrio, Joe (1952) | Lost 1-2 | -111573 |
| 8legacy | 194 | See, Andrew (1503) | Lost 1-2 | -201553 |
| top | average opponent: 1666record: 5-3 | new rating: 1553 | ||
| Grand Prix Las Vegas 2017 (legacy) (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 593 | Pickett, Lynda (1467) | Draw 1-1 | -11499 |
| 2legacy | 483 | Chaudhry, Shann (1390) | Won 2-0 | +161515 |
| 3legacy | 617 | Yeung, Jason (1519) | Won 2-0 | +181533 |
| 4legacy | 332 | Golia, Nathan (1536) | Lost 1-2 | -171516 |
| 5legacy | 586 | Buono, Robert (1390) | Won 2-0 | +151531 |
| 6legacy | 384 | Maurici, Micheal (1862) | Lost 1-2 | -121519 |
| 7legacy | 559 | Ryan, Andrew (1505) | Lost 1-2 | -181501 |
| top | average opponent: 1524record: 3-3-1 | new rating: 1501 | ||