Zimak, David
Current rating: 1557
Record: 17-18-1
| Grand Prix Krakow 2019 (M20 limited) | starting rating: 1422 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 344 | Ullmann, Marc (1500) | Won 2-1 | +201442 |
| 2sealed | 437 | Wronski, Arek (1518) | Won 2-1 | +191461 |
| 3sealed | 176 | Boelens, Jasper (1859) | Won 2-0 | +251486 |
| 4sealed | 84 | Grabowski, Wojciech (1635) | Lost 0-2 | -151471 |
| 5sealed | 141 | Swierczynski, Michal (1634) | Won 2-0 | +211492 |
| 6sealed | 49 | Dalton, Connor (1555) | Won 2-0 | +191511 |
| 7sealed | 208 | Thaler, Sebastian (2103) | Lost 0-2 | -91502 |
| 8sealed | 291 | Marquilly, Adrien (1712) | Won 2-0 | +221524 |
| 9sealed | 367 | Repetti, Guillaume (1714) | Won 2-1 | +221546 |
| 10draft | 394 | Pastukhov, Sergiy (1682) | Won 2-1 | +201566 |
| 11draft | 402 | Czech, David (1532) | Lost 0-2 | -191547 |
| 12draft | 329 | Jaman, Bruno (1736) | Won 2-1 | +221569 |
| 13draft | 363 | Kulhanek, Jan (1583) | Lost 0-2 | -181551 |
| 14draft | 392 | Thormahlen, Bruno (1828) | Won 2-0 | +231574 |
| 15draft | 340 | Mosna, Karol (1641) | Lost 0-2 | -171557 |
| top | average opponent: 1682record: 10-5 | new rating: 1557 | ||
| Grand Prix Warsaw 2018 (GRN limited) | starting rating: 1422 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 304 | Kiskis, Saulius (1490) | Won 2-0 | +201442 |
| 2sealed | 327 | Dorr, Tobias (1617) | Won 2-0 | +211463 |
| 3sealed | 425 | Arlow, Chris (1539) | Lost 0-2 | -171446 |
| 4sealed | 522 | Fernandez, Manuel Alejandro (1736) | Lost 0-2 | -131433 |
| 5sealed | 665 | Tassinari, Luca (1842) | Lost 0-2 | -111422 |
| top | average opponent: 1645record: 2-3 | new rating: 1422 | ||
| Grand Prix Warsaw 2017 (XLN standard) | starting rating: 1426 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 155 | Recher, Amir (1500) | Lost 0-2 | -161410 |
| 2standard | 405 | Fron, Bartlomiej (1485) | Won 2-1 | +191429 |
| 3standard | 433 | Majchrzak, Piotr (1589) | Lost 1-2 | -151414 |
| 4standard | 478 | Bedynski, Bartosz (1483) | Won 2-0 | +191433 |
| 5standard | 371 | Friedrich, Marcin (1483) | Lost 1-2 | -171416 |
| 6standard | 416 | Larsson, Rikard (1596) | Won 2-0 | +211437 |
| 7standard | 399 | Olsson, Andre (1603) | Lost 1-2 | -151422 |
| top | average opponent: 1534record: 3-4 | new rating: 1422 | ||
| Grand Prix Warsaw 2016 (KLD standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 11 | Woskresinski, Bartlomiej (1637) | Lost 0-2 | -161484 |
| 2standard | 356 | Lee, Dongkyu (1559) | Lost 1-2 | -161468 |
| 3standard | 500 | Rozenberg, Oleksandr (1469) | Draw 1-1 | 01468 |
| 4standard | 516 | Sabelnikov, Vladyslav (1375) | Won 2-1 | +161484 |
| 5standard | 458 | Sackett, Eric (1381) | Lost 1-2 | -201464 |
| 6standard | 480 | Kornobis, Maciej (1463) | Lost 0-2 | -181446 |
| 7standard | 466 | Paprocki, Bartlomiej (1362) | Lost 0-2 | -191427 |
| 8standard | 430 | Grzonkowski, Tomasz (1426) | Won 2-0 | +181445 |
| 9standard | 383 | Breviglieri, Massimo (1418) | Lost 0-2 | -191426 |
| top | average opponent: 1454record: 2-6-1 | new rating: 1426 | ||