34 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Gustain, Marc | Singh, Benjamin | 1-0 | C47 | Runde 8: Gustain, Marc - Singh, Benjamin | 2026-08-22 |
| Gustain, Marc | Jekel, Wolfgang | 1-0 | B01 | Runde 1: Gustain, Marc - Jekel, Wolfgang | 2026-08-17 |
| Gustain, Marc | Zhang, Yibo | 1-0 | B30 | Runde 3: Gustain, Marc - Zhang, Yibo | 2026-08-08 |
| Gustain, Marc | Hurm, Marius | 1/2-1/2 | B53 | Runde 5: Gustain, Marc - Hurm, Marius | 2026-08-08 |
| Gustain, Marc | Schulz, Tim | 1/2-1/2 | B53 | Runde 7: Gustain, Marc - Schulz, Tim | 2026-08-08 |
| Gustain, Marc | Zuferi, Enis | 0-1 | B40 | Grenke Chess Festival 2026 Open | 2026-04-03 |
| Gustain, Marc | Degenhard, Simon | 1/2-1/2 | B40 | 36. Staufer Open 2026 A | 2026-01-05 |
| Gustain, Marc | Hrebenshchykova, Yelyzaveta | 1/2-1/2 | B40 | 36. Staufer Open 2026 A | 2026-01-03 |
| Gustain, Marc | Hecht, Carsten | 0-1 | B62 | Grenke Open | 2024-04-01 |
| Gustain, Marc | Schroeter, Samuel | 1-0 | B27 | SF Deizisau 2 - SC Böblingen | 2023-12-10 |
| Gustain, Marc | Hoenick, Andreas | 1-0 | B62 | SG Schwäbisch Gmünd - SF Deizisau 2 | 2023-09-17 |
| Gustain, Marc | Braun, Georg | 1/2-1/2 | B10 | Württemberg Championship - Masters | 2021-08-22 |
| Gustain, Marc | Maisch, Julian | 0-1 | B40 | Württemberg Championship - Masters | 2021-08-21 |
| Gustain, Marc | Krassowizkij, Jaroslaw | 0-1 | C26 | Württemberg Championship - Masters | 2021-08-19 |