15 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Szostak, Michal | Szeliga, Cezary | 1-0 | E10 | Open C | 2026-08-06 |
| Szostak, Michal | Lisek, Adam | 1-0 | B01 | Open C | 2026-08-01 |
| Szostak, Michal | Orzechowski, Jakub | 0-1 | B18 | Open-3 | 2025-06-01 |
| Szostak, Michal | Rutkowski, Feliks | 0-1 | B48 | Open-3 | 2025-06-01 |
| Szostak, Michal | Nowak, Franciszek | 1-0 | B07 | Open-3 | 2025-05-31 |
| Szostak, Michal | Komisarek, Wojciech | 0-1 | B13 | Open-3 | 2025-05-31 |