Zimak, Jan
Current rating: 1361
Record: 3-11
| Grand Prix Warsaw 2017 (XLN standard) | starting rating: 1409 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 58 | Melamed, Aviv (1431) | Lost 0-2 | -171392 |
| 2standard | 348 | Kozlowski, Mikolaj (1380) | Won 2-0 | +171409 |
| 3standard | 411 | Lagasse, Diego (1499) | Lost 1-2 | -161393 |
| 4standard | 506 | Taylor, Kristopher (1448) | Lost 1-2 | -171376 |
| 5standard | 506 | Murphy, Tadhg (1571) | Lost 1-2 | -151361 |
| average opponent: 1466record: 1-4 | new rating: 1361 | |||
| Grand Prix Warsaw 2016 (KLD standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 119 | Pianowski, Karol (1500) | Won 2-0 | +181518 |
| 2standard | 42 | Freitag, Simon (1557) | Lost 1-2 | -171501 |
| 3standard | 464 | Misnik, Mateusz (1538) | Lost 0-2 | -181483 |
| 4standard | 455 | Pisula, Marcin (1384) | Lost 1-2 | -191464 |
| 5standard | 481 | Lindner, Anne (1464) | Won 1-0 | +181482 |
| 6standard | 427 | Jemiolek, Jakub (1501) | Lost 0-2 | -181464 |
| 7standard | 441 | Kopka, Pawel (1461) | Lost 1-2 | -181446 |
| 8standard | 427 | Kozlowski, Lukasz (1445) | Lost 0-2 | -181428 |
| 9standard | 384 | Hoppe, Sebastian (1386) | Lost 0-2 | -191409 |
| average opponent: 1471record: 2-7 | new rating: 1409 | |||