Zak, Adam
Current rating: 1474
Record: 1-3
| Grand Prix Prague 2019 (UMA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 531 | Piwko, Pawel (1578) | Lost 0-2 | -171483 |
| 2sealed | 1099 | Ornolfsson, Thorlakur Matthias (1625) | Won 2-0 | +211504 |
| 3sealed | 1001 | Stefanescu, Alexandru (1735) | Lost 1-2 | -141490 |
| 4sealed | 1016 | Honscheid, Benjamin (1591) | Lost 1-2 | -161474 |
| average opponent: 1632record: 1-3 | new rating: 1474 | |||