Hrudka, Jan
Current rating: 1448
Record: 3-6
| Grand Prix Prague 2014 (modern) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 232 | Petruska, Tomas (1573) | Lost 1-2 | -161447 |
| 2modern | 374 | Chomicki, Maciej (1517) | Won 2-1 | +191466 |
| 3modern | 466 | Vidal, Victor (1498) | Lost 1-2 | -171449 |
| 4modern | 618 | Riman, Vit (1438) | Won 2-0 | +171466 |
| 5modern | 375 | Guidez, Nicolas (1432) | Lost 1-2 | -181448 |
| average opponent: 1492record: 2-3 | new rating: 1448 | |||
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 711 | Holzhey, Christoph (1469) | Won 2-0 | +171517 |
| 2sealed | 543 | Habermann, Marvin (1552) | Lost 1-2 | -171500 |
| 3sealed | 670 | Renko, Andrej (1422) | Lost 1-2 | -191481 |
| 4sealed | 839 | Kuta, Viktor (1482) | Lost 1-2 | -181463 |
| average opponent: 1481record: 1-3 | new rating: 1463 | |||