Grotek, Mariusz
Current rating: 1444
Record: 1-4
| Grand Prix Krakow 2015 (DTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 9 | Popov, Miro (1360) | Lost 0-2 | -211479 |
| 2standard | 353 | Suchomski, Radoslaw (1482) | Lost 1-2 | -171462 |
| 3standard | 532 | Rabiega, Piotr (1464) | Lost 0-2 | -181444 |
| 4standard | 545 | Gorczynski, Przemyslaw (1444) | Won 2-0 | +181462 |
| 5standard | 510 | Golota, Pawel (1466) | Lost 1-2 | -181444 |
| average opponent: 1443record: 1-4 | new rating: 1444 | |||