Cernohous, Petr
Current rating: 1500
Record: 19-20-1
| Grand Prix Antwerp 2013 (modern) | starting rating: 1498 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 25 | Jansen, Ralf (1529) | Draw 1-1 | 01498 |
| 2modern | 384 | Eastham, Mark (1503) | Lost 0-2 | -171481 |
| 3modern | 654 | Van Sompel, Arne (1482) | Won 2-0 | +181499 |
| 4modern | 534 | Robert, Eric (1500) | Won 2-0 | +181517 |
| 5modern | 383 | Meyers, Vincent (1554) | Lost 1-2 | -181499 |
| 6modern | 509 | Wiederspan, Paul (1401) | Won 2-0 | +171516 |
| 7modern | 363 | Ceska, Pavel (1652) | Lost 0-2 | -161500 |
| top | average opponent: 1517record: 3-3-1 | new rating: 1500 | ||
| Grand Prix Prague 2011 (NPH limited) | starting rating: 1506 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 688 | Konecny, Petr (1526) | Won 2-0 | +181524 |
| 2sealed | 630 | Barclay, Allan (1664) | Won 2-0 | +211545 |
| 3sealed | 566 | Bruno, Luca (1683) | Lost 0-2 | -161529 |
| 4sealed | 639 | Roessler, Pavel (1505) | Won 2-0 | +181547 |
| 5sealed | 605 | Steurer, Matthaus (1639) | Lost 0-2 | -171530 |
| 6sealed | 668 | Hauck, Christian (1593) | Lost 1-2 | -161514 |
| 7sealed | 654 | Bamberger, Mark (1499) | Lost 0-2 | -191495 |
| 8sealed | 620 | Lebeda, Tomas (1652) | Lost 1-2 | -151480 |
| 9sealed | 607 | Pavlov, Stefan (1470) | Won 2-1 | +181498 |
| top | average opponent: 1581record: 4-5 | new rating: 1498 | ||
| Grand Prix Prague 2009 (M10 limited) | starting rating: 1526 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 11 | Linell, Patrik (1470) | Lost 1-2 | -191507 |
| 2sealed | 209 | Sedivy, Jan (1482) | Lost 0-2 | -191488 |
| 3sealed | 295 | Hochegger, Daniel (1463) | Won 2-0 | +181506 |
| 4sealed | 268 | Kwiatkowski, Maciej (1468) | Lost 0-2 | -191487 |
| 5sealed | 298 | Vesely, Tomas (1447) | Won 2-1 | +171504 |
| 6sealed | 254 | Marciniszyn, Michal (1643) | Lost 0-2 | -151489 |
| 7sealed | 224 | Altsmid, Jakub (1465) | Lost 0-2 | -191470 |
| 8sealed | 177 | Sup, Richard (1466) | Won 2-0 | +181488 |
| 9sealed | 134 | Bedecs, Lukas (1461) | Won 2-0 | +181506 |
| top | average opponent: 1485record: 4-5 | new rating: 1506 | ||
| Grand Prix Vienna 2008 (extended) | starting rating: 1531 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 1 | Jeraj, Ales (1503) | Lost 0-2 | -191512 |
| 2extended | 191 | Wildmoser, Martin (1432) | Lost 0-2 | -191493 |
| 3extended | 241 | Vytesnik, Daniel (1464) | Lost 0-2 | -191474 |
| 4extended | 256 | Frank, Sascha (1445) | Lost 1-2 | -181456 |
| 5extended | 246 | Maltese, Dafne (1428) | Won 2-0 | +171473 |
| 6extended | 219 | Mader, Gunther (1449) | Won 2-0 | +181491 |
| 7extended | 175 | Gorka, Sebastian (1467) | Won 2-0 | +171508 |
| 8extended | 152 | Menzel, Ralf (1471) | Won 2-0 | +181526 |
| top | average opponent: 1457record: 4-4 | new rating: 1526 | ||
| Grand Prix Vienna 2004 (COK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 76 | Heimerl, Stefan (1500) | Won 2-0 | +181518 |
| 2sealed | 212 | Loydl, Marcus (1624) | Won 2-1 | +201538 |
| 3sealed | 43 | Ghini, Davide (1683) | Won 2-0 | +211559 |
| 4sealed | 25 | Gallus, Andrej (1558) | Won 2-1 | +181577 |
| 5sealed | 42 | Unfried, Jorg (1756) | Lost 0-2 | -151562 |
| 6sealed | 39 | Sienko, Piotr (1789) | Lost 1-2 | -141548 |
| 7sealed | 104 | Rasir, Tobias (1595) | Lost 0-2 | -171531 |
| top | average opponent: 1643record: 4-3 | new rating: 1531 | ||