Cook, Keith
Current rating: 1486
Record: 5-6
| Grand Prix Atlanta 2019 (legacy) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 272 | Sweeney, Cody (1466) | Won 2-1 | +181498 |
| 2legacy | 162 | Mesadri, Conrado (1739) | Lost 1-2 | -141484 |
| 3legacy | 338 | Blake, David (1386) | Won 2-1 | +171501 |
| 4legacy | 178 | Seritt, Nathan (1524) | Won 2-0 | +181519 |
| 5legacy | 157 | Cornwell, Kyle (1674) | Lost 1-2 | -151504 |
| 6legacy | 192 | Shiflett, Chris (1494) | Lost 1-2 | -181486 |
| average opponent: 1547record: 3-3 | new rating: 1486 | |||
| Grand Prix Charlotte 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 546 | Britton, Prentice L (1500) | Won 2-0 | +181518 |
| 2modern | 332 | Richter, Matthew (1473) | Won 2-0 | +171535 |
| 3modern | 296 | Janssen, Jon (1490) | Lost 0-2 | -191516 |
| 4modern | 448 | Kail, Alex (1548) | Lost 1-2 | -171499 |
| 5modern | 506 | McGinley, Jonah (1460) | Lost 0-2 | -191480 |
| average opponent: 1494record: 2-3 | new rating: 1480 | |||