Cowey, Joe
Current rating: 1496
| Grand Prix Birmingham 2018 (std) (DOM standard) | starting rating: 1451 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 167 | Christopher, Tom (1449) | Won 2-0 | +181469 |
| 2standard | 183 | Kerr, Conor (1575) | Won 2-1 | +201489 |
| 3standard | 139 | Viniczai, Tibor (1812) | Won 2-1 | +231512 |
| 4standard | 141 | Harasymiw, Mac (1497) | Lost 0-2 | -181494 |
| 5standard | 213 | Gonzalez, David [ESP] (1397) | Won 2-1 | +161510 |
| 6standard | 57 | Duffin, Thomas (1365) | Won 2-0 | +161526 |
| 7standard | 87 | Neves, Vasco (1769) | Lost 0-2 | -141512 |
| 8standard | 177 | Bousfield, Callum (1627) | Lost 0-2 | -161496 |
| top | average opponent: 1561record: 5-3 | new rating: 1496 | ||
| Grand Prix Birmingham 2017 (modern) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 550 | Gonzalez, Pablo (1390) | Won 2-1 | +161480 |
| 2modern | 306 | Enberg, Mikael (1476) | Lost 0-0 | -181462 |
| 3modern | 434 | Descamps, Benjamin (1659) | Lost 1-2 | -141448 |
| 4modern | 713 | Baker, Adam (1469) | Won 2-1 | +181466 |
| 5modern | 449 | Black, Dylan (1521) | Lost 1-2 | -171449 |
| 6modern | 532 | Engelsvoll, Frank (1486) | Lost 0-2 | -171432 |
| 7modern | 661 | Cubal, Mariana (1463) | Lost 1-2 | -181414 |
| 8modern | 589 | Sudzius, Jurgis (1396) | Won 2-0 | +181432 |
| 9modern | 517 | Bumbar, Alex (1458) | Won 2-0 | +191451 |
| top | average opponent: 1480record: 4-5 | new rating: 1451 | ||
| Grand Prix London 2016 (KLD limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 497 | Welbourne, Markus (1482) | Lost 0-2 | -181482 |
| 2sealed | 825 | Farmer, Tim (1467) | Won 2-1 | +171499 |
| 3sealed | 1000 | Wojcik, Przemyslaw (1556) | Lost 1-2 | -171482 |
| 4sealed | 1097 | Olesen, Mikkel (1444) | Lost 1-2 | -181464 |
| top | average opponent: 1487record: 1-3 | new rating: 1464 | ||