Jorn, Onken
Current rating: 1464
Record: 3-6
| Grand Prix Prague 2017 (AER limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 568 | La Placa, Andrea (1699) | Lost 1-2 | -141486 |
| 2sealed | 489 | Andersson, Kris (1453) | Won 2-1 | +171503 |
| 3sealed | 695 | Hadrys, Piotr (1640) | Lost 1-2 | -161487 |
| 4sealed | 753 | Zabsky, Matej (1484) | Won 2-1 | +181505 |
| 5sealed | 757 | Preyer, Thomas (1713) | Lost 0-2 | -141491 |
| 6sealed | 648 | Silfver, Ahti (1560) | Lost 1-2 | -171474 |
| 7sealed | 690 | Whelan, Brian (1545) | Won 2-1 | +201494 |
| 8sealed | 639 | Florent, Lucas (1842) | Lost 1-2 | -121482 |
| 9sealed | 592 | Eriksen, Laurent (1476) | Lost 0-2 | -181464 |
| average opponent: 1601record: 3-6 | new rating: 1464 | |||