Grundy, Gregory
Current rating: 1579
| Grand Prix Seattle 2018 (legacy) (legacy) | starting rating: 1566 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 484 | Solar, James (1552) | Lost 1-2 | -181548 |
| 2legacy | 550 | Gorz, James (1481) | Won 2-1 | +171565 |
| 3legacy | 491 | Rafferty, Jeffrey (1506) | Won 2-0 | +171582 |
| 4legacy | 346 | Robbins, Steven (1520) | Draw 1-1 | -11581 |
| 5legacy | 347 | Laucke, Michael (1529) | Won 2-0 | +171598 |
| 6legacy | 223 | Moreno, Zach (1540) | Lost 1-2 | -191579 |
| top | average opponent: 1521record: 3-2-1 | new rating: 1579 | ||
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1562 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 84 | Bordwell, Christopher (1416) | Won 2-0 | +151577 |
| 2standard | 56 | Foglesong, Nicklaus (1644) | Won 2-1 | +191596 |
| 3standard | 289 | Frojen, Thomas (1535) | Lost 0-2 | -191577 |
| 4standard | 429 | Oien, Matt (1556) | Won 2-1 | +181595 |
| 5standard | 124 | Burkhart, Corey (1929) | Lost 0-2 | -121583 |
| 6standard | 284 | Wolbers, Andrew (1824) | Lost 0-2 | -141569 |
| 7standard | 473 | Lambert, Drew (1506) | Won 2-1 | +171586 |
| 8standard | 294 | Buaiz, Christopher (1495) | Lost 1-2 | -201566 |
| top | average opponent: 1613record: 4-4 | new rating: 1566 | ||
| Grand Prix Oakland 2013 (M14 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 187 | Schwendiman, Mark (1500) | Won 2-0 | +181518 |
| 2sealed | 94 | Long, Nate (1536) | Lost 1-2 | -181500 |
| 3sealed | 425 | DeLustro, John J (1500) | Won 2-0 | +181518 |
| 4sealed | 417 | Bai, Huaxing (1508) | Won 2-0 | +181536 |
| 5sealed | 461 | D680, Zikang (1536) | Won 2-1 | +181554 |
| 6sealed | 152 | Manary, Faith (1423) | Won 2-0 | +161570 |
| 7sealed | 35 | Wilson, Jacob (2035) | Won 2-1 | +261596 |
| 8sealed | 54 | Dumlao, Gary (1712) | Lost 1-2 | -161580 |
| 9sealed | 139 | Edwards, Nic (1577) | Lost 0-2 | -181562 |
| top | average opponent: 1592record: 6-3 | new rating: 1562 | ||