34 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Pecka, Jan | Zadrapova, Amalie | 0-1 | E82 | Polofinale MCR junioru 2025 | 2025-11-22 |
| Pecka, Jan | Bohatyrov, Mykola | 1-0 | E60 | Polofinale MCR junioru 2025 | 2025-11-20 |
| Pecka, Jan | Belaska, Vaclav | 1-0 | B50 | Polofinale MCR junioru 2025 | 2025-11-18 |
| Pecka, Jan | Hladky, Mikulas | 1-0 | B52 | Polofinale MCR junioru 2025 | 2025-11-17 |
| Pecka, Jan | Siles, Jan | 1/2-1/2 | A30 | Polofinale MCR junioru 2025 | 2025-11-16 |
| Pecka, Jan | Bara, Jan | 1-0 | D85 | Round 8: Pecka, Jan - Bara, Jan | 2025-07-05 |
| Pecka, Jan | Langmajer, Jan | 1-0 | B10 | Round 6: Pecka, Jan - Langmajer, Jan | 2025-07-03 |
| Pecka, Jan | Pycha, Patrik | 1-0 | C05 | Round 4: Pecka, Jan - Pycha, Patrik | 2025-07-01 |
| Pecka, Jan | Andrle, Filip | 1/2-1/2 | A01 | Round 2: Pecka, Jan - Andrle, Filip | 2025-06-29 |
| Jan Pecka | Jan Siles | 1-0 | B31 | Round 8: Jan Pecka - Jan Siles | 2023-09-01 |
| Pecka, Jan | Zemen, Pavel | 1/2-1/2 | E80 | POHÃR mÄsta ÅÃÄany 2023 | 2023-08-30 |
| Pecka, Jan | Svadlenka, Dominik | 0-1 | B13 | POHÃR mÄsta ÅÃÄany 2023 | 2023-08-28 |
| Pecka, Jan | Postl, Petr | 0-1 | E81 | Czech Open 2023 - E | 2023-07-16 |
| Pecka, Jan | Hlavina, Matous | 1/2-1/2 | C00 | Czech Open 2023 - E | 2023-07-15 |
| Jan Pecka | Ondrej Skypala | 1/2-1/2 | E87 | Round 8: Jan Pecka - Ondrej Skypala | 2023-07-08 |
| Jan Pecka | Vaclav Kroulik | 1/2-1/2 | A00 | Round 6: Jan Pecka - Vaclav Kroulik | 2023-07-06 |
| Jan Pecka | Rudolf Jun | 0-1 | A65 | Round 2: Jan Pecka - Rudolf Jun | 2023-07-02 |