Kozica, Marek
Current rating: 1483
Record: 27-32
| Grand Prix Krakow 2019 (M20 limited) | starting rating: 1554 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 404 | Szepe, Andras (1500) | Won 2-0 | +171571 |
| 2sealed | 422 | Zlotoiabko, Boris (1657) | Lost 0-2 | -161555 |
| 3sealed | 295 | van den Wouwer, Chris (1568) | Lost 0-2 | -181537 |
| 4sealed | 375 | Matsson, Edvin (1512) | Lost 0-2 | -191518 |
| 5sealed | 377 | Otero, Carlos (1601) | Lost 0-2 | -161502 |
| 6sealed | 329 | Laine, Lauri (1464) | Won 2-0 | +171519 |
| 7sealed | 409 | Klima, Petr (1519) | Lost 0-2 | -181501 |
| 8sealed | 415 | Buchan, Lee (1474) | Lost 0-2 | -181483 |
| top | average opponent: 1537record: 2-6 | new rating: 1483 | ||
| Grand Prix Prague 2019 (UMA limited) | starting rating: 1473 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 793 | Marcinkowski, Emil (1547) | Lost 0-2 | -171456 |
| 2sealed | 1082 | Lindroos, Jani (1523) | Won 2-0 | +191475 |
| 3sealed | 732 | Mathes, Moritz (1456) | Won 2-0 | +181493 |
| 4sealed | 765 | Marien, Laurent (1481) | Won 2-0 | +181511 |
| 5sealed | 189 | Tosenko, Anna (1635) | Won 2-0 | +201531 |
| 6sealed | 146 | Strautz, Marcel (1565) | Won 2-0 | +181549 |
| 7sealed | 84 | Tassinari, Luca (1878) | Won 2-0 | +241573 |
| 8sealed | 29 | Minahan, Keane (1706) | Won 2-0 | +211594 |
| 9sealed | 582 | Jirkal, Tomas (1722) | Won 2-1 | +201614 |
| 10draft | 616 | Heining, Joakim (1684) | Lost 0-2 | -171597 |
| 11draft | 614 | Frischmann, Ludwig (1839) | Lost 0-2 | -131584 |
| 12draft | 616 | Pritsch, Max (1987) | Lost 0-2 | -111573 |
| 13draft | 685 | Dudesek, Stepan (1542) | Lost 1-2 | -191554 |
| top | average opponent: 1659record: 8-5 | new rating: 1554 | ||
| Grand Prix Warsaw 2018 (GRN limited) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 103 | Reymondin, Achille (1546) | Won 1-0 | +191484 |
| 2sealed | 353 | Magarotto, Francesco (1545) | Lost 0-2 | -171467 |
| 3sealed | 505 | Kolipinski, Adam (1449) | Won 2-0 | +181485 |
| 4sealed | 403 | van Leeuwen, Arjan (1811) | Lost 0-2 | -121473 |
| top | average opponent: 1588record: 2-2 | new rating: 1473 | ||
| Grand Prix Prague 2015 (ORI standard) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 360 | Piepiorka, Karol (1500) | Won 2-0 | +181501 |
| 2standard | 329 | Nucera, Antonino (1350) | Lost 1-2 | -201481 |
| 3standard | 421 | Kloucek, Robert (1499) | Lost 0-2 | -181463 |
| 4standard | 522 | Wenz, Jochen (1484) | Won 2-0 | +181481 |
| 5standard | 442 | Wiarowski, Lukasz (1496) | Won 2-1 | +191500 |
| 6standard | 436 | Stolar, Stanislav (1523) | Lost 1-2 | -181482 |
| 7standard | 372 | Paglialunga, Andrea (1506) | Lost 0-2 | -171465 |
| top | average opponent: 1480record: 3-4 | new rating: 1465 | ||
| Grand Prix Lisbon 2012 (RTR limited) | starting rating: 1401 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 505 | La Loggia, Matteo (1491) | Lost 0-2 | -161385 |
| 2sealed | 756 | Johns, Robert (1439) | Won 2-0 | +191404 |
| 3sealed | 747 | Pichetto, Filippo (1516) | Lost 0-2 | -161388 |
| 4sealed | 733 | Christensen, Benn (1512) | Won 2-0 | +201408 |
| 5sealed | 692 | Kvaloe, Tarjei (1733) | Lost 1-2 | -121396 |
| 6sealed | 750 | Vernescu, Victor (1573) | Won 2-0 | +211417 |
| 7sealed | 667 | Bornelov, Susanne (1577) | Won 2-1 | +211438 |
| 8sealed | 662 | Ribeiro, Hugo (1519) | Won 2-0 | +201458 |
| 9sealed | 724 | Borba, Rodrigo (1897) | Won 2-1 | +251483 |
| top | average opponent: 1584record: 6-3 | new rating: 1483 | ||
| Grand Prix Vienna 2008 (extended) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 53 | Missebner, Konrad (1500) | Won 2-0 | +191464 |
| 2extended | 137 | Wichlacz, Zbigniew (1608) | Lost 0-2 | -161448 |
| 3extended | 157 | Posolda, Ondrej (1477) | Lost 0-2 | -171431 |
| 4extended | 213 | Mede, Tobias (1467) | Lost 0-2 | -171414 |
| 5extended | 246 | Ghafouri, Fabian (1448) | Won 2-0 | +181432 |
| 6extended | 196 | Friedrich, Martin (1481) | Lost 0-2 | -171415 |
| 7extended | 182 | Vladik, Pavel (1580) | Lost 0-2 | -151400 |
| 8extended | 161 | Muller, Martin (1429) | Lost 0-2 | -171383 |
| 9extended | 144 | Broesigke, Berengar (1427) | Won 2-1 | +181401 |
| top | average opponent: 1491record: 3-6 | new rating: 1401 | ||
| Grand Prix Stockholm 2007 (FUT limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 132 | Wikstro, Jesper (1500) | Lost 0-2 | -181482 |
| 2sealed | 256 | Meldal, Bjorn (1430) | Lost 0-2 | -191463 |
| 3sealed | 276 | Arnlund, Tomas (1429) | Lost 0-2 | -191444 |
| 4sealed | 339 | Ali, Joan (1446) | Won 2-1 | +181462 |
| 5sealed | 290 | Holmstedt, Rolf (1431) | Won 2-0 | +181480 |
| 6sealed | 229 | Merlet, Cedric (1485) | Won 2-0 | +181498 |
| 7sealed | 166 | Alexandersson, Andreas (1505) | Lost 0-0 | -181480 |
| 8sealed | 172 | Alesinsky, Bakir (1476) | Lost 1-2 | -181462 |
| 9sealed | 141 | Adams-cortez, Michael (1502) | Lost 0-2 | -171445 |
| top | average opponent: 1467record: 3-6 | new rating: 1445 | ||