Pietrzak, Piotr
Current rating: 1486
Record: 2-3
| Grand Prix Krakow 2019 (M20 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 345 | Zakharchenko, Oleg (1646) | Lost 0-2 | -151485 |
| 3sealed | 359 | Skrudlik, Dariusz (1504) | Lost 1-2 | -181467 |
| 4sealed | 357 | Ptasznik, Mikolaj (1449) | Won 2-0 | +181485 |
| 5sealed | 259 | Paragi, Zoltan (1577) | Won 2-1 | +191504 |
| 6sealed | 158 | Pramendorfer, Franz (1502) | Lost 0-2 | -181486 |
| average opponent: 1535record: 2-3 | new rating: 1486 | |||