Cox, Brendan
Current rating: 1420
| Grand Prix Kansas City 2019 (WAR standard) | starting rating: 1431 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 98 | Hargrove, Paul (1508) | Won 2-1 | +201451 |
| 2standard | 199 | Kroeger, Brett (1618) | Lost 1-2 | -151436 |
| 3standard | 196 | Bretthorst, Robert (1434) | Lost 1-2 | -181418 |
| 4standard | 361 | Dean, Johnathan (1480) | Lost 0-0 | -171401 |
| 5standard | 331 | Sestak, Teigan (1462) | Won 2-1 | +191420 |
| top | average opponent: 1500record: 2-3 | new rating: 1420 | ||
| Grand Prix Milwaukee 2018 (GRN standard) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 209 | Dagang, John (1500) | Lost 0-2 | -181464 |
| 2standard | 361 | Christensen, Jonathan Ryan (1483) | Lost 1-2 | -171447 |
| 3standard | 561 | White, Daniel (1520) | Lost 1-2 | -171430 |
| 4standard | 596 | Carr, Bradley (1445) | Won 2-1 | +181448 |
| 5standard | 505 | Williamson, Cliff (1567) | Won 2-0 | +201468 |
| 6standard | 445 | Mandeau, Kohl (1383) | Lost 1-2 | -191449 |
| 7standard | 388 | Thoren, Jeff (1470) | Lost 0-2 | -181431 |
| top | average opponent: 1481record: 2-5 | new rating: 1431 | ||
| Grand Prix Montreal 2001 (ODY limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 6 | Stewart, John (1500) | Won 2-0 | +181518 |
| 2sealed | 42 | Kwiatkowski, Randy (1518) | Draw 1-1 | 01518 |
| 3sealed | 36 | Smith, Galen (1518) | Lost 1-2 | -181500 |
| 4sealed | 89 | Gauthier, Stephane (1500) | Lost 0-1 | -181482 |
| top | average opponent: 1509record: 1-2-1 | new rating: 1482 | ||