11 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Mathijssen, Jasper | Grutter, Tim | 0-1 | B00 | Round 1: Mathijssen, Jasper - Grutter, Tim | 2026-05-02 |
| Mathijssen, Jasper | Diduh, Ihor | 0-1 | B02 | Round 3: Mathijssen, Jasper - Diduh, Ihor | 2026-05-02 |
| Mathijssen, Jasper | Seth, Aakrit | 0-1 | B27 | Round 1: Mathijssen, Jasper - Seth, Aakrit | 2024-06-16 |
| Mathijssen, Jasper | Oluborode, Isaac Olamiposi | 1-0 | C50 | WSTC | 2023-08-07 |
| Mathijssen, Jasper | Van Heinsbergen, Jonathan | 0-1 | B98 | WSTC | 2023-08-06 |
| Mathijssen, Jasper | Espenbet, Amirzhan | 1-0 | C54 | WSTC | 2023-08-04 |