Jakub, Kopaczynski
Current rating: 1523
Record: 4-3
| Grand Prix Krakow 2015 (DTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 148 | Kot, Krzysztof (1500) | Won 2-0 | +181518 |
| 2standard | 233 | Galovic, Dusan (1769) | Lost 0-2 | -141504 |
| 3standard | 441 | Kulesza, Maciej (1497) | Lost 1-2 | -181486 |
| 4standard | 483 | Vanek, Vojtech (1488) | Won 2-0 | +181504 |
| 5standard | 306 | Valtonen, Ville (1485) | Won 2-0 | +181522 |
| 6standard | 342 | Zubko, Ilja (1560) | Won 2-1 | +191541 |
| 7standard | 237 | Ronai, Arpad (1536) | Lost 1-2 | -181523 |
| average opponent: 1548record: 4-3 | new rating: 1523 | |||