Kopacek, Jiri
Current rating: 1520
Record: 5-4
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 655 | Pauli, Stev (1465) | Lost 1-2 | -191481 |
| 2sealed | 747 | Manak, Jakub (1482) | Won 2-0 | +181499 |
| 3sealed | 721 | Toltsch, Nicolas (1484) | Lost 0-2 | -181481 |
| 4sealed | 793 | Brusi, Jeffrey (1504) | Won 2-1 | +191500 |
| 5sealed | 741 | Strzelczyk, Adam (1540) | Won 2-0 | +181518 |
| 6sealed | 720 | Hermann, Manfred (1630) | Won 2-0 | +201538 |
| 7sealed | 663 | Trushin, Kirill (1500) | Won 2-0 | +181556 |
| 8sealed | 583 | Obererlacher, David (1466) | Lost 1-2 | -201536 |
| 9sealed | 583 | Sato, Rei (1645) | Lost 0-2 | -161520 |
| average opponent: 1524record: 5-4 | new rating: 1520 | |||