Cerny, Jiri
Current rating: 1331
Record: 8-19-1
| Grand Prix Prague 2019 (UMA limited) | starting rating: 1379 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 463 | Ramon, Thomas (1470) | Lost 0-2 | -161363 |
| 2sealed | 1214 | Miletin, Tomas (1481) | Lost 0-2 | -161347 |
| 3sealed | 1062 | Zuk, Bartosz (1463) | Lost 0-2 | -161331 |
| top | average opponent: 1472record: 0-3 | new rating: 1331 | ||
| Grand Prix Prague 2015 (ORI standard) | starting rating: 1423 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 71 | Celikovska, Klara (1515) | Won 2-1 | +201443 |
| 2standard | 45 | Palmkvist, Joakim (1576) | Lost 0-2 | -161427 |
| 3standard | 382 | Colomei, Rares-Glad (1558) | Lost 1-2 | -151412 |
| 4standard | 610 | Dohmen, David (1548) | Lost 0-2 | -161396 |
| 5standard | 638 | Degrave, Geoffrey (1466) | Lost 1-2 | -171379 |
| top | average opponent: 1533record: 1-4 | new rating: 1379 | ||
| Grand Prix Vienna 2008 (extended) | starting rating: 1455 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 177 | Kapl, Harald (1500) | Won 2-1 | +191474 |
| 2extended | 17 | Friedrich, Martin (1518) | Won 2-1 | +191493 |
| 3extended | 64 | Ye, Heyde (1535) | Lost 1-2 | -181475 |
| 4extended | 93 | Heigl, Franz (1502) | Lost 1-2 | -171458 |
| 5extended | 177 | Kolldorfer, Andreas (1499) | Lost 1-2 | -171441 |
| 6extended | 217 | Wild, Patrick (1481) | Lost 0-2 | -181423 |
| top | average opponent: 1506record: 2-4 | new rating: 1423 | ||
| Grand Prix Prague 2003 (LGN limited) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 154 | Ruzizka, Ernst (1528) | Draw 1-1 | +11450 |
| 2sealed | 239 | Holtin, Benjamin (1587) | Lost 0-2 | -151435 |
| 3sealed | 358 | Lipinski, Aleksander (1418) | Lost 0-2 | -191416 |
| 4sealed | 399 | Masek, Pavel (1464) | Won 1-0 | +191435 |
| 5sealed | 323 | Miler, Jiri (1484) | Lost 1-2 | -171418 |
| 6sealed | 312 | Pastucha, Martin (1380) | Won 2-0 | +171435 |
| 7sealed | 232 | Bahnik, Stepan (1513) | Won 2-1 | +201455 |
| top | average opponent: 1482record: 3-3-1 | new rating: 1455 | ||
| Grand Prix Prague 2001 (PLS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 100 | Rychtar, Ondrej (1501) | Lost 0-2 | -181482 |
| 2sealed | 274 | Krejsa, Tomas (1482) | Won 2-0 | +181500 |
| 3sealed | 158 | van der Velden, Stan (1531) | Lost 0-2 | -171483 |
| 4sealed | 237 | Anweiler, Stanislaw (1482) | Won 2-1 | +181501 |
| 5sealed | 153 | Brucker, David (1629) | Lost 0-2 | -161485 |
| 6sealed | 221 | Rendl, Martin (1482) | Lost 1-2 | -181467 |
| 7sealed | 213 | Zak, Krzysztof (1464) | Lost 0-2 | -181449 |
| top | average opponent: 1510record: 2-5 | new rating: 1449 | ||