Vojtech, Marek
Current rating: 1330
Record: 1-11
| Grand Prix Prague 2018 (modern) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 343 | Hallikainen, Jere (1597) | Lost 1-2 | -161433 |
| 2modern | 591 | Martin, David [ENG] (1453) | Lost 0-2 | -171416 |
| 3modern | 926 | Hofverberg, Andreas (1532) | Lost 0-2 | -161400 |
| 4modern | 923 | Guy, Romain (1434) | Lost 1-2 | -181382 |
| 5modern | 911 | Bacchetti, Paolo (1414) | Lost 0-2 | -171365 |
| 6modern | 827 | Hahn, Nils (1368) | Lost 1-2 | -181347 |
| 7modern | 746 | Fossati, Fabio (1414) | Lost 0-2 | -171330 |
| average opponent: 1459record: 0-7 | new rating: 1330 | |||
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 725 | Schermer, Duncan (1596) | Won 2-1 | +201520 |
| 2sealed | 659 | Siirand, Ahti (1573) | Lost 1-2 | -171503 |
| 3sealed | 753 | Lukes, Bretislav (1567) | Lost 0-2 | -171486 |
| 4sealed | 756 | Gabriel, Dana (1482) | Lost 0-2 | -181468 |
| 5sealed | 811 | Zak, Milan (1406) | Lost 0-2 | -191449 |
| average opponent: 1525record: 1-4 | new rating: 1449 | |||