Katra, Marcin
Current rating: 1522
Record: 4-3-1
| Grand Prix Krakow 2015 (DTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 210 | Harendarz, Michal (1505) | Lost 1-2 | -181482 |
| 2standard | 261 | Grzesiak, Kamil (1482) | Draw 1-1 | 01482 |
| 3standard | 486 | Mosna, Karol (1483) | Won 2-1 | +181500 |
| 4standard | 405 | Nowak, Mateusz (1504) | Won 2-0 | +181518 |
| 5standard | 284 | Karczewski, Marcin (1534) | Won 2-0 | +181536 |
| 6standard | 176 | Kunachowicz, Piotr (1538) | Won 2-0 | +181554 |
| 7standard | 108 | Greenleaf, Paul (1540) | Lost 0-2 | -181536 |
| 8standard | 189 | Sikora, Mateusz (1768) | Lost 0-2 | -141522 |
| average opponent: 1544record: 4-3-1 | new rating: 1522 | |||