Wieczorek, Piotr
Current rating: 1448
Record: 5-8-2
| Grand Prix Krakow 2015 (DTK standard) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 190 | Aichinger, Thomas (1540) | Lost 0-2 | -161450 |
| 2standard | 372 | Nadstawny, Rafal (1426) | Draw 1-1 | -11449 |
| 3standard | 491 | Dempsey, Peter J (1451) | Lost 1-2 | -181431 |
| 4standard | 530 | Holowczak, Maciej (1432) | Won 2-0 | +181449 |
| 5standard | 465 | Perz, Florian (1326) | Won 2-1 | +161465 |
| 6standard | 372 | Zuberek, Bartosz (1499) | Lost 0-2 | -171448 |
| 7standard | 367 | Benca, Lucian-Cristian (1491) | Lost 1-2 | -181430 |
| 8standard | 328 | Hansen, Ronnie (1413) | Draw 1-1 | 01430 |
| 9standard | 286 | Drzewinski, Marcin (1450) | Won 2-0 | +181448 |
| average opponent: 1448record: 3-4-2 | new rating: 1448 | |||
| Grand Prix Warsaw 2014 (JOU limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 52 | Mikrut, Jacek (1587) | Lost 1-2 | -161484 |
| 2sealed | 257 | Zalwowski, Mariusz (1482) | Won 2-1 | +181502 |
| 3sealed | 189 | Heinonen, Aku (1478) | Lost 1-2 | -191483 |
| 4sealed | 447 | Kozaczko, Dominik (1413) | Won 2-1 | +171500 |
| 5sealed | 280 | Michalski, Adam (1501) | Lost 0-2 | -181482 |
| 6sealed | 186 | Gorokhovskyy, Kostyantyn (1614) | Lost 0-2 | -161466 |
| average opponent: 1512record: 2-4 | new rating: 1466 | |||