Kosteckas, Tomas
Current rating: 1501
Record: 6-7-2
| Grand Prix London 2019 (WAR sealed) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| A1sealed | 186 | Monroe, Bryn (1667) | Won 2-1 | +211537 |
| A2sealed | 14 | Horvat, Vjeran (1844) | Lost 1-2 | -121525 |
| A3sealed | 129 | Wdowiak, Witold (1445) | Draw 1-1 | -21523 |
| A4sealed | 162 | Ehrhardt, Andreas (1749) | Lost 0-2 | -141509 |
| A5sealed | 159 | Kubica, Mathieu (1442) | Won 2-0 | +171526 |
| A6sealed | 104 | Wilson, Scott (1381) | Lost 0-2 | -211505 |
| A7sealed | 96 | McNally, Graham (1273) | Draw 1-1 | -41501 |
| average opponent: 1543record: 2-3-2 | new rating: 1501 | |||
| Grand Prix Strasbourg 2019 (RNA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 405 | Huguenin-Virchaux, Cyril (1467) | Won 2-0 | +171517 |
| 2sealed | 10 | Primot, Armel (1626) | Won 2-0 | +201537 |
| 3sealed | 140 | Geffroy, Olivier (1468) | Won 2-1 | +171554 |
| 4sealed | 147 | Prosek, Dominik (2004) | Lost 0-2 | -101544 |
| 5sealed | 153 | Hittel, Matthias (1707) | Lost 0-2 | -151529 |
| 6sealed | 271 | Cabezas Munoz, Jose Manuel (1880) | Lost 0-2 | -121517 |
| 7sealed | 385 | Blandenier, Baptiste (1514) | Lost 0-2 | -181499 |
| 8sealed | 388 | De Meyer, Marc (1474) | Won 2-0 | +171516 |
| average opponent: 1642record: 4-4 | new rating: 1516 | |||