Kollar, Karlo
Current rating: 1423
Record: 10-16
| Grand Prix Brussels 2020 (pioneer) | starting rating: 1453 | |||
| round | table | opponent (rating) | result | Δrating |
| 2pioneer | 42 | Venny, Guillaume (1528) | Won 2-1 | +201473 |
| 3pioneer | 73 | Klakauskas, Paulius (1569) | Lost 1-2 | -171456 |
| 4pioneer | 230 | Schwartzkopff, Julian (1470) | Lost 1-2 | -171439 |
| 5pioneer | 439 | Regent, Bartosz (1542) | Lost 0-2 | -161423 |
| top | average opponent: 1527record: 1-3 | new rating: 1423 | ||
| Grand Prix Utrecht 2019 (ELD limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 247 | Bihet, Julien (1654) | Lost 0-2 | -151485 |
| 3sealed | 565 | Querci, Tommaso (1506) | Won 2-1 | +181503 |
| 4sealed | 426 | Cornehl, Philip (1516) | Lost 1-2 | -171486 |
| 5sealed | 472 | Waschischeck, Tom (1500) | Lost 1-2 | -181468 |
| 6sealed | 457 | Frezard, Julien (1655) | Lost 1-2 | -151453 |
| top | average opponent: 1566record: 1-4 | new rating: 1453 | ||
| Grand Prix Barcelona 2019 (modern) | starting rating: 1506 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 143 | Oliveira Graichen, Leonardo (1751) | Lost 1-2 | -131493 |
| 3modern | 602 | Jimenez Martin, Alberto (1639) | Won 2-1 | +201513 |
| 4modern | 472 | Francini, Roberto (1501) | Lost 0-2 | -181495 |
| 5modern | 497 | Flaczinski, Jake (1666) | Lost 1-2 | -151480 |
| 6modern | 577 | Houssard, Adrien (1495) | Lost 0-2 | -181462 |
| 7modern | 477 | Mole, Damien (1575) | Won 2-0 | +201482 |
| 8modern | 384 | Hiller, Kayo Andrea (1474) | Won 2-1 | +181500 |
| top | average opponent: 1586record: 3-4 | new rating: 1500 | ||
| Grand Prix Strasbourg 2019 (RNA limited) | starting rating: 1528 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 246 | Kuppers, Daniel (1500) | Lost 0-2 | -191509 |
| 2sealed | 392 | Boulanger, Raphael (1431) | Won 2-0 | +171526 |
| 3sealed | 551 | Arens, Jonathan (1437) | Lost 0-2 | -201506 |
| top | average opponent: 1456record: 1-2 | new rating: 1506 | ||
| Grand Prix Prague 2019 (UMA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1107 | Trinkl, Johannes (1500) | Won 2-0 | +181518 |
| 2sealed | 463 | Kretschmer, Maximilian (1585) | Won 2-0 | +191537 |
| 3sealed | 40 | Safai, Soheil (1596) | Lost 1-2 | -171520 |
| 4sealed | 752 | Holzinger, Thomas (1779) | Lost 0-2 | -131507 |
| 5sealed | 612 | Mironovskiy, Vladimir (1438) | Lost 1-2 | -191488 |
| 6sealed | 793 | Mathis, Christoph (1629) | Won 2-0 | +201508 |
| 7sealed | 626 | Porten, Andreas (1591) | Won 2-1 | +201528 |
| top | average opponent: 1588record: 4-3 | new rating: 1528 | ||