8 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Cosman, Jackson Robert | Buitrago Mosquera, Antonio | 0-1 | A45 | XLVI Metropolitano Torneo Internacional 2025 Blitz | 2025-12-30 |
| Cosman, Jackson Robert | Arauz Morales, Victor Ivan | 0-1 | A40 | XLVI Metropolitano Torneo Internacional 2025 U14 | 2025-12-28 |
| Cosman, Jackson Robert | Tepaz Tian, Marvin Alejandro | 1-0 | A80 | XLVI Metropolitano Torneo Internacional 2025 U14 | 2025-12-24 |