Chovanec, Jan
Current rating: 1445
Record: 7-10-1
| Grand Prix Prague 2014 (modern) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 309 | Knoepfly, Jeremy (1359) | Won 2-1 | +161533 |
| 2modern | 267 | Dickmann, Fabian (1867) | Lost 1-2 | -131520 |
| 3modern | 404 | Kasbauer, Tobias (1500) | Lost 0-2 | -181502 |
| 4modern | 525 | Belasta, Matej (1485) | Lost 1-2 | -181484 |
| 5modern | 635 | Pech, Milan (1464) | Draw 1-1 | -11483 |
| 6modern | 576 | Hanus, Jioi (1400) | Won 2-0 | +171500 |
| 7modern | 487 | Sevcik, Lukas (1472) | Lost 0-2 | -191481 |
| 8modern | 459 | Kloucek, Robert (1464) | Lost 0-2 | -181463 |
| 9modern | 407 | Sveda, Vit (1446) | Lost 1-2 | -181445 |
| average opponent: 1495record: 2-6-1 | new rating: 1445 | |||
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 229 | Zangelmi, Alex (1506) | Won 2-1 | +181518 |
| 2sealed | 146 | Soukupova, Petra (1516) | Won 2-0 | +181536 |
| 3sealed | 91 | Civrny, Petr (1570) | Lost 0-2 | -171519 |
| 4sealed | 127 | Arndt, Melanie (1439) | Lost 0-2 | -201499 |
| 5sealed | 271 | Vettenranta, Michael (1505) | Lost 1-2 | -181481 |
| 6sealed | 230 | Jurinek, Antonin (1482) | Lost 0-2 | -181463 |
| 7sealed | 237 | Svogoda, Libor (1462) | Won 2-0 | +181481 |
| 8sealed | 172 | Veverka, Tomas (1487) | Won 2-0 | +181499 |
| 9sealed | 106 | Danihelka, Vit (1498) | Won 2-0 | +181517 |
| average opponent: 1496record: 5-4 | new rating: 1517 | |||