Berka, Ivo
Current rating: 1541
| Grand Prix Prague 2019 (UMA limited) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 973 | Koenig, Lukas (1500) | Won 2-0 | +171555 |
| 2sealed | 837 | Jean, Benjamin (1583) | Won 2-1 | +191574 |
| 3sealed | 205 | Kelly, Ricardo (1630) | Won 2-0 | +191593 |
| 4sealed | 247 | Zvirblis, Rokas (1592) | Lost 0-2 | -181575 |
| 5sealed | 400 | Mehlhorn, Anne (1437) | Lost 1-2 | -211554 |
| 6sealed | 537 | Fitzgerald, Conor (1533) | Won 2-1 | +181572 |
| 7sealed | 464 | Maurri, Filippo (1869) | Lost 0-2 | -131559 |
| 8sealed | 449 | Simonin, Romain (1567) | Lost 0-2 | -181541 |
| top | average opponent: 1589record: 4-4 | new rating: 1541 | ||
| Grand Prix Vienna 2014 (BNG limited) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 69 | Fritz Kunc, Ziga (1754) | Won 2-1 | +221557 |
| 2sealed | 179 | Schnecker, Martin (1610) | Won 2-1 | +191576 |
| 3sealed | 43 | Wais, Jonathan (1485) | Won 2-1 | +161592 |
| 4sealed | 85 | Reitbauer, David (1833) | Lost 1-2 | -141578 |
| 5sealed | 222 | Mcquoid Jespersen, Henrik (1501) | Lost 1-2 | -191559 |
| 6sealed | 336 | Vandermaelen, Yves (1387) | Lost 1-2 | -211538 |
| top | average opponent: 1595record: 3-3 | new rating: 1538 | ||
| Grand Prix Vienna 2013 (THS standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 40 | Kriz, Tomas (1620) | Lost 1-2 | -161484 |
| 2standard | 357 | Dolezel, Petr (1482) | Won 2-0 | +181502 |
| 3standard | 477 | Postma, Jan (1499) | Won 2-0 | +181520 |
| 4standard | 473 | Distel, Piotr (1387) | Lost 0-1 | -201500 |
| 5standard | 493 | Nadler, Matthias (1470) | Won 2-1 | +171517 |
| 6standard | 397 | Colding-Jorgensen, Martin (1444) | Won 2-0 | +171534 |
| 7standard | 167 | Reling, Andreas (1632) | Won 2-0 | +201554 |
| 8standard | 70 | Fahler, Bjorn (1518) | Lost 1-2 | -191535 |
| top | average opponent: 1506record: 5-3 | new rating: 1535 | ||