Dvorak, Jiri 8782
Current rating: 1516
Record: 8-7
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1536 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 172 | Hruska, Jakub (1500) | Lost 1-2 | -181518 |
| 2sealed | 213 | Lefever, Joris (1541) | Lost 1-2 | -181500 |
| 3sealed | 288 | Vencl, Vasek (1464) | Won 2-0 | +171517 |
| 4sealed | 256 | Rozman, Zbynek (1481) | Won 2-1 | +181535 |
| 5sealed | 250 | Wroblewski, Konrad (1500) | Lost 1-2 | -191516 |
| 6sealed | 268 | Peuker, Thomas (1456) | Won 2-1 | +171533 |
| 7sealed | 198 | Geuens, Peter (1606) | Lost 1-2 | -171516 |
| average opponent: 1507record: 3-4 | new rating: 1516 | |||
| Grand Prix Prague 2003 (LGN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 330 | Brosch, Cliff (1500) | Lost 1-2 | -181482 |
| 2sealed | 254 | Bautz, Jiri (1483) | Lost 1-2 | -181464 |
| 3sealed | 417 | Cifersky, Boris (1464) | Won 2-0 | +181482 |
| 4sealed | 367 | Jankowski, Rafal (1482) | Won 2-0 | +181500 |
| 5sealed | 247 | Roder, Dominik (1470) | Lost 0-2 | -191481 |
| 6sealed | 269 | Porubsky, Jan (1482) | Won 2-0 | +181499 |
| 7sealed | 195 | Sistek, Martin (1535) | Won 2-0 | +191518 |
| 8sealed | 128 | Nachtigall, Jaroslav (1525) | Won 2-1 | +181536 |
| average opponent: 1493record: 5-3 | new rating: 1536 | |||