Witek, Krzysztof
Current rating: 1450
Record: 1-4
| Grand Prix Warsaw 2017 (XLN standard) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 292 | Piwko, Pawel (1589) | Lost 0-2 | -161450 |
| record: 0-1 | new rating: 1450 | |||
| Grand Prix Prague 2015 (ORI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 401 | Gregor, Robert (1550) | Lost 1-2 | -171483 |
| 2standard | 451 | Lipovec, Jernej (1547) | Won 2-0 | +191502 |
| 3standard | 576 | Daszkiewicz, Sebastian (1511) | Lost 0-2 | -181484 |
| 4standard | 629 | Dedicik, Zdenek (1482) | Lost 0-2 | -181466 |
| average opponent: 1522record: 1-3 | new rating: 1466 | |||