Herz, Jakub
Current rating: 1309
Record: 1-12
| Grand Prix Prague 2018 (modern) | starting rating: 1425 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 530 | Hartmann, Thomas (1481) | Lost 1-2 | -171408 |
| 2modern | 557 | Odinokov, Danila (1482) | Lost 0-2 | -161392 |
| 3modern | 952 | Steinbruck, Philipp (1542) | Lost 1-2 | -151377 |
| 4modern | 955 | Loic, David (1446) | Lost 1-2 | -171360 |
| 5modern | 926 | Bargy, Marine (1430) | Lost 0-2 | -171343 |
| 6modern | 831 | Stockerl, Tobias (1409) | Lost 0-2 | -171326 |
| 7modern | 748 | Schulte, Timo (1391) | Lost 0-2 | -171309 |
| average opponent: 1454record: 0-7 | new rating: 1309 | |||
| Grand Prix Warsaw 2017 (XLN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 291 | Kakol, Bartosz (1500) | Lost 0-2 | -181482 |
| 2standard | 323 | Herr, Beren (1275) | Lost 0-2 | -221460 |
| 3standard | 580 | Tadini, Gabriele (1525) | Lost 0-2 | -171443 |
| 4standard | 599 | Nienstedt, Urs (1439) | Lost 1-2 | -181425 |
| 5standard | 574 | Zadrozny, Michal (1426) | Won 2-0 | +181443 |
| 6standard | 537 | Fron, Bartlomiej (1445) | Lost 1-2 | -181425 |
| average opponent: 1435record: 1-5 | new rating: 1425 | |||