Colwill, Brandon
Current rating: 1438
Record: 4-8
| Grand Prix Phoenix 2020 (pioneer) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 63 | Watabayashi, Keith (1499) | Lost 1-2 | -171449 |
| 2pioneer | 225 | Rodriguez, Giovanni (1412) | Lost 0-2 | -191430 |
| 3pioneer | 417 | Tompkins, Mike (1440) | Won 2-1 | +181448 |
| 4pioneer | 350 | Christensen, Drew (1862) | Lost 1-2 | -111437 |
| 5pioneer | 387 | Cuberly, Matthew (1463) | Won 2-0 | +191456 |
| 6pioneer | 306 | Nover, Grant (1437) | Lost 0-2 | -181438 |
| average opponent: 1519record: 2-4 | new rating: 1438 | |||
| Grand Prix Phoenix 2019 (ELD limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 57 | Riche, Mason (1276) | Won 2-0 | +141514 |
| 2sealed | 10 | Lister, Chloe (1543) | Won 2-1 | +191533 |
| 3sealed | 93 | Pardee, Carolyn (1678) | Lost 0-2 | -161517 |
| 4sealed | 104 | Zhang, Bushi (1659) | Lost 0-2 | -151502 |
| 5sealed | 204 | Joiner, Jody (1370) | Lost 0-2 | -211481 |
| 6sealed | 176 | Martin, Christopher6413 (1637) | Lost 0-2 | -151466 |
| average opponent: 1527record: 2-4 | new rating: 1466 | |||