Jachymowski, Jacek
Current rating: 1475
Record: 3-5
| Grand Prix Warsaw 2018 (GRN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 345 | Wache, Paul (1760) | Won 2-0 | +231523 |
| 2sealed | 379 | Aarela, Tommi (1660) | Lost 1-2 | -161507 |
| 3sealed | 480 | Schelvander, Perola (1408) | Won 2-0 | +161523 |
| 4sealed | 266 | Haram, Joakim (1698) | Lost 0-2 | -151508 |
| 5sealed | 445 | Tkacz, Mikolaj (1499) | Lost 0-2 | -181490 |
| 6sealed | 641 | Vinther, Nicolai (1551) | Lost 1-2 | -171473 |
| 7sealed | 570 | Shynkorenko, Ihor (1468) | Lost 1-2 | -181455 |
| 8sealed | 509 | Gonzalez Gutierrez, Roberto (1528) | Won 2-0 | +201475 |
| average opponent: 1572record: 3-5 | new rating: 1475 | |||