Siska, Jiri
Current rating: 1501
Record: 4-4
| Grand Prix Prague 2003 (LGN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 352 | Majerech, Vladan (1500) | Lost 0-2 | -181482 |
| 2sealed | 330 | Kuril, Miroslav (1482) | Won 2-1 | +181500 |
| 3sealed | 329 | Maij, Rosario (1541) | Lost 1-2 | -171483 |
| 4sealed | 373 | Turkin, Alexey (1482) | Won 2-0 | +181501 |
| 5sealed | 310 | Picha, Stepan (1496) | Lost 0-2 | -181483 |
| 6sealed | 275 | Szymanski, Marek (1481) | Won 2-0 | +181501 |
| 7sealed | 215 | Vorona, Denis (1556) | Lost 0-2 | -171484 |
| 8sealed | 191 | Kubik, Petr (1466) | Won 2-1 | +171501 |
| average opponent: 1501record: 4-4 | new rating: 1501 | |||