8 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Kosmala, Mateusz | Wilgosz, Szczepan | 0-1 | C29 | II liga 2026 - D | 2026-08-31 |
| Kosmala, Mateusz | Czaja, Wiktor | 1/2-1/2 | A00 | II Liga 2026 | 2026-08-31 |
| Kosmala, Mateusz | Werblinski, Wojciech | 1/2-1/2 | B10 | II Liga 2026 | 2026-08-31 |
| Kosmala, Mateusz | Mirski, Stanislaw | 0-1 | B31 | II liga seniorów 2026 | 2026-08-29 |