Kopecek, Kamil
Current rating: 1373
| Grand Prix Prague 2014 (modern) | starting rating: 1395 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 318 | Salmi, Matti (1682) | Lost 0-2 | -131382 |
| 2modern | 479 | Slezacek, Ondrej (1479) | Lost 1-2 | -161366 |
| 3modern | 595 | Novotny, Kamil (1460) | Won 2-1 | +201386 |
| 4modern | 507 | Massy, Kevin (1454) | Lost 1-2 | -171369 |
| 5modern | 586 | Risch, Jonas (1468) | Won 2-1 | +201389 |
| 6modern | 519 | Kasak, Adam (1484) | Lost 1-2 | -161373 |
| top | average opponent: 1504record: 2-4 | new rating: 1373 | ||
| Grand Prix Prague 2011 (NPH limited) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 694 | Yashina, Valeria (1456) | Lost 0-2 | -171428 |
| 2sealed | 741 | Larsen, Michael (1231) | Won 2-0 | +141442 |
| 3sealed | 616 | Baldus, Michael (1614) | Lost 1-2 | -151427 |
| 4sealed | 760 | Popov, Alexander (1587) | Lost 1-2 | -151412 |
| 5sealed | 737 | Vevoda, Zdenek (1486) | Lost 0-2 | -171395 |
| top | average opponent: 1474record: 1-4 | new rating: 1395 | ||
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 21 | Stanev, Kalin G (1483) | Won 2-1 | +181518 |
| 2sealed | 19 | Leithner, Alexander (1525) | Lost 1-2 | -181500 |
| 3sealed | 187 | Bertrand, Matthieu (1554) | Lost 0-2 | -171483 |
| 4sealed | 263 | Wall, Oskar (1449) | Lost 0-2 | -191464 |
| 5sealed | 287 | Petukhov, Andrey (1465) | Won 2-1 | +181482 |
| 6sealed | 252 | Magerl, David (1362) | Lost 0-2 | -201462 |
| 7sealed | 232 | Toltsch, Fabian (1534) | Lost 0-2 | -171445 |
| 8sealed | 183 | Jedlicka, Pavel (1448) | Lost 0-2 | -181427 |
| 9sealed | 145 | Juvcenko, Igor (1428) | Won 2-1 | +181445 |
| top | average opponent: 1472record: 3-6 | new rating: 1445 | ||