Dvorak, Jiri
Current rating: 1560
Record: 13-13
| Grand Prix Prague 2019 (UMA limited) | starting rating: 1390 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1175 | Valuh, Branislav (1468) | Lost 1-2 | -161374 |
| 2sealed | 1133 | Berthod, Jeremie (1550) | Won 2-0 | +211395 |
| 3sealed | 622 | Rauser, Thomas (1303) | Won 2-0 | +161411 |
| 4sealed | 596 | Makosa, Bartosz (1502) | Won 2-0 | +201431 |
| 5sealed | 272 | Pauchon, Jean-Christophe (1319) | Won 2-0 | +161447 |
| 6sealed | 104 | Zivec, Josef (1725) | Won 2-1 | +231470 |
| 7sealed | 55 | Fries, Stefan (1816) | Lost 1-2 | -121458 |
| 8sealed | 247 | Lysek, Andrzej (1711) | Won 2-0 | +221480 |
| 9sealed | 648 | Rodrigues, Thiago (1971) | Won 2-1 | +271507 |
| 10draft | 676 | Amico, Alessandro (1617) | Won 2-1 | +201527 |
| 11draft | 668 | Deinhardt, Benjamin (1589) | Won 2-0 | +191546 |
| 12draft | 634 | Graf, Michael (1700) | Won 2-0 | +211567 |
| 13draft | 612 | Ranieri, Giorgio (1666) | Lost 0-2 | -171550 |
| 14draft | 559 | Brambilla, Davide (1935) | Lost 0-2 | -111539 |
| 15draft | 693 | Jukola, Lasse (1674) | Won 2-1 | +211560 |
| top | average opponent: 1636record: 11-4 | new rating: 1560 | ||
| Grand Prix Prague 2017 (AER limited) | starting rating: 1441 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 378 | Syka, Radek (1387) | Lost 0-2 | -191422 |
| 2sealed | 629 | Platzer, Lubos (1585) | Lost 1-2 | -151407 |
| 3sealed | 835 | Willmann, Philipp (1481) | Lost 0-2 | -171390 |
| top | average opponent: 1484record: 0-3 | new rating: 1390 | ||
| Grand Prix Amsterdam 2011 (legacy) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 4legacy | 58 | Pauwels, Shaun (1764) | Lost 1-2 | -131451 |
| 5legacy | 195 | Casadas Gonzalez, Adri (1520) | Lost 1-2 | -171434 |
| 6legacy | 202 | Tochacek, Daniel (1494) | Won 2-0 | +191453 |
| 7legacy | 135 | Vogt, Marc (1782) | Lost 1-2 | -121441 |
| top | average opponent: 1640record: 1-3 | new rating: 1441 | ||
| Grand Prix Prague 2011 (NPH limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 683 | Billiau, Michel (1374) | Lost 1-2 | -201480 |
| 2sealed | 673 | Tochacek, Daniel (1567) | Won 2-1 | +191499 |
| 3sealed | 666 | Ripa, Jan (1534) | Lost 1-2 | -171482 |
| 4sealed | 706 | Pavel, Moraves (1465) | Lost 1-2 | -181464 |
| top | average opponent: 1485record: 1-3 | new rating: 1464 | ||