Stach, Jan
Current rating: 1428
Record: 0-4
| Grand Prix Warsaw 2018 (GRN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 173 | Mede, Tobias (1446) | Lost 1-2 | -191481 |
| 2sealed | 463 | Mirkin, Kyrylo (1485) | Lost 0-2 | -181463 |
| 3sealed | 854 | Ekstrom, Per (1509) | Lost 0-2 | -171446 |
| 4sealed | 859 | Lukosevicius, Marijus Jonas (1453) | Lost 0-2 | -181428 |
| average opponent: 1473record: 0-4 | new rating: 1428 | |||