Portl, Zdenek
Current rating: 1470
Record: 2-4
| Grand Prix Prague 2017 (AER limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 185 | Stefanov, Momchil (1609) | Lost 0-2 | -161484 |
| 2sealed | 565 | Mcparland, Molly (1391) | Lost 1-2 | -201464 |
| 3sealed | 942 | Gybas, Jan (1445) | Won 2-1 | +181482 |
| 4sealed | 729 | Encinas, Alejandro (1637) | Lost 0-2 | -151467 |
| 5sealed | 880 | Irons, Sonny (1402) | Won 2-0 | +171484 |
| 6sealed | 750 | Storch, Florian (1740) | Lost 0-2 | -141470 |
| average opponent: 1537record: 2-4 | new rating: 1470 | |||