Mioduszewski, Piotr
Current rating: 1461
Record: 5-8-1
| Grand Prix Krakow 2019 (M20 limited) | starting rating: 1448 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 308 | Zawieracz, Mateusz (1500) | Won 2-0 | +191467 |
| 3sealed | 135 | Dabrowski, Michal (1448) | Won 2-0 | +181485 |
| 4sealed | 78 | Vasilchenko, Pavel (1555) | Won 2-1 | +191504 |
| 5sealed | 54 | Pedrakowski, Tomasz (1881) | Lost 0-2 | -111493 |
| 6sealed | 126 | Brancewicz, Michal (1678) | Lost 1-2 | -151478 |
| 7sealed | 237 | Dziedzicki, Rafal (1551) | Lost 1-2 | -171461 |
| average opponent: 1602record: 3-3 | new rating: 1461 | |||
| Grand Prix Warsaw 2018 (GRN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 243 | Adam, Sven (1500) | Won 2-1 | +181518 |
| 2sealed | 46 | Pancini, Marco (1733) | Lost 0-2 | -141504 |
| 3sealed | 492 | Stadler, Matthias (1548) | Lost 1-2 | -171487 |
| 4sealed | 651 | Picca, Giacomo (1479) | Lost 0-2 | -181469 |
| 5sealed | 747 | Jagiello, Michal (1428) | Lost 0-2 | -191450 |
| 6sealed | 693 | Odijk, Martijn (1398) | Draw 1-1 | -11449 |
| 7sealed | 601 | Winkenstern, Jason (1445) | Lost 0-2 | -181431 |
| 8sealed | 522 | Kowalczyk, Adam (1395) | Won 2-0 | +171448 |
| average opponent: 1491record: 2-5-1 | new rating: 1448 | |||