Dedecek, Martin
Current rating: 1444
Record: 3-6
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 191 | Kordovan, Daniel (1491) | Won 2-0 | +181518 |
| 2sealed | 170 | Sutka, Martin (1471) | Lost 0-2 | -191499 |
| 3sealed | 250 | Simoncic, Matej (1497) | Lost 0-2 | -181481 |
| 4sealed | 324 | Walter, Jakob (1483) | Lost 0-2 | -181463 |
| 5sealed | 290 | Stehlik, Mirek (1464) | Lost 0-2 | -181445 |
| 6sealed | 275 | Augustin, Marek (1444) | Lost 1-2 | -181427 |
| 7sealed | 33 | Vales, Michal (1410) | Lost 1-2 | -181409 |
| 8sealed | 191 | Janecek, Michal (1384) | Won 2-0 | +171426 |
| 9sealed | 147 | Cekal, Jakub (1427) | Won 2-0 | +181444 |
| average opponent: 1452record: 3-6 | new rating: 1444 | |||