23 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Olszewski, Marek | Wozniak, Grzegorz | 1/2-1/2 | C50 | 2 liga 2025 2 | 2025-09-07 |
| Olszewski, Marek | Skalny, Rafal | 1/2-1/2 | C00 | 2 liga 2025 2 | 2025-09-06 |
| Olszewski, Marek | Mazurek, Jerzy | 1-0 | B53 | 2 liga 2025 2 | 2025-09-05 |
| Olszewski, Marek | Stankowski, Wiktor | 0-1 | A01 | Open-3 | 2025-06-01 |
| Olszewski, Marek | Shvets, Viktoria | 0-1 | A01 | Open | 2025-05-31 |
| Olszewski, Marek | Baran, Franciszek | 0-1 | A01 | Open-3 | 2025-05-31 |
| Olszewski, Marek | Kupczyk, Lukasz | 0-1 | A01 | Open-3 | 2025-05-31 |
| Olszewski, Marek | Kossowski, Pawel | 1/2-1/2 | C28 | 2liga-3 | 2024-09-07 |
| Olszewski, Marek | Kopacki, Aleksander | 0-1 | B53 | 2liga-3 | 2024-09-05 |
| Olszewski, Marek | Gorniewicz, Oskar | 1/2-1/2 | B01 | 2liga-3 | 2024-09-04 |
| Olszewski, Marek | Reichel, Lukasz | 0-1 | B40 | 2liga-3 | 2024-09-02 |
| Olszewski, Marek | Owad, Jakub | 0-1 | B40 | 2liga-2 | 2024-09-01 |