Horacek, Jiri
Current rating: 1431
Record: 9-14
| Grand Prix Prague 2018 (modern) | starting rating: 1416 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 588 | Hirsman, Matic (1500) | Lost 0-2 | -161400 |
| 2modern | 674 | Al Haffar, Iyad (1544) | Won 2-0 | +201420 |
| 3modern | 636 | Borcevsky, Pavel (1579) | Lost 1-2 | -151405 |
| 4modern | 748 | Kopec, Miloslav (1482) | Lost 1-2 | -161389 |
| 5modern | 834 | Jurga, Vaclav (1466) | Won 2-0 | +191408 |
| 6modern | 682 | Sandmann, Christoph (1484) | Lost 0-2 | -171391 |
| 7modern | 670 | Knapp, Sandro (1468) | Won 2-0 | +201411 |
| 8modern | 538 | Neubacher, Lauritz (1511) | Won 2-0 | +201431 |
| top | average opponent: 1504record: 4-4 | new rating: 1431 | ||
| Grand Prix Prague 2017 (AER limited) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 458 | Nitsche, Jiri (1605) | Lost 0-2 | -161450 |
| 2sealed | 645 | Oyntzen, Lars (1587) | Won 2-0 | +211471 |
| 3sealed | 686 | Toltsch, Roman (1528) | Lost 1-2 | -171454 |
| 4sealed | 879 | Gaca, Robert (1474) | Lost 0-2 | -181436 |
| 5sealed | 849 | Jelinek, Jan (1330) | Lost 0-2 | -201416 |
| top | average opponent: 1505record: 1-4 | new rating: 1416 | ||
| Grand Prix Prague 2015 (ORI standard) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 30 | van der Slot, Dennis (1446) | Won 2-1 | +171500 |
| 2standard | 175 | Bordac, Lukas (1430) | Lost 1-2 | -191481 |
| 3standard | 537 | Kolsut, Kamil (1392) | Won 2-1 | +161497 |
| 4standard | 421 | Gerbersdorf, Viktor (1738) | Lost 0-2 | -141483 |
| 5standard | 437 | Hallmchen, Sebastian (1501) | Lost 0-2 | -171466 |
| top | average opponent: 1501record: 2-3 | new rating: 1466 | ||
| Grand Prix Utrecht 2014 (M15 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 276 | de Beer, Theun (1627) | Lost 1-2 | -161484 |
| 2standard | 394 | Renneis, Sebastian (1439) | Won 2-0 | +171501 |
| 3standard | 535 | Jonsson, Markus (1363) | Lost 0-2 | -201481 |
| 4standard | 544 | Schlappa, Florian (1550) | Lost 1-2 | -171464 |
| 5standard | 588 | Siniarski, Lukasz (1483) | Won 2-0 | +191483 |
| top | average opponent: 1492record: 2-3 | new rating: 1483 | ||