Duscha, Jacob
Current rating: 1623
Record: 12-7
| Grand Prix Prague 2018 (modern) | starting rating: 1473 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 393 | Eckhard, Linus (1662) | Lost 1-2 | -151458 |
| 4modern | 587 | De Vincenzi, Alessio (1514) | Lost 0-2 | -171441 |
| 5modern | 479 | Grundler, Tobias (1515) | Won 2-1 | +191460 |
| 6modern | 352 | Jaeger, Sven (1502) | Won 2-0 | +191479 |
| 7modern | 313 | Strautz, Marcel (1582) | Won 2-1 | +201499 |
| 8modern | 143 | Sucquet, Alexander (1600) | Won 2-0 | +201519 |
| 9modern | 92 | Borkowski, Robert (1592) | Lost 1-2 | -171502 |
| 10modern | 177 | Coremans, Jeffrey (1645) | Won 2-0 | +211523 |
| 11modern | 81 | Jones, Edward (1524) | Won 2-0 | +181541 |
| 12modern | 63 | Famiani, Guglielmo (1717) | Won 2-0 | +211562 |
| 13modern | 63 | Jansson, Joakim (1698) | Won 2-1 | +201582 |
| 14modern | 21 | Hoppe, Sebastian (1704) | Won 2-1 | +211603 |
| 15modern | 33 | Hofverberg, Andreas (1708) | Won 2-0 | +201623 |
| average opponent: 1613record: 10-3 | new rating: 1623 | |||
| Grand Prix Copenhagen 2017 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 185 | Therrien, Daniel (1388) | Won 2-0 | +161516 |
| 2modern | 302 | Zarges, Florian (1652) | Lost 1-2 | -161500 |
| 3modern | 657 | Gurney, James (1613) | Lost 0-2 | -161484 |
| 4modern | 822 | Hohler, Arno (1661) | Lost 1-2 | -141470 |
| 5modern | 819 | Repo, Aleksanteri (1464) | Won 2-1 | +181488 |
| 6modern | 699 | Havelka, Ondrej (1655) | Lost 1-2 | -151473 |
| average opponent: 1572record: 2-4 | new rating: 1473 | |||