28 games in the PremovedPrep archive. Games as White.
| White | Black | Result | ECO | Event | Date |
|---|---|---|---|---|---|
| Mannhart, Marcel | Righi, Ezio | 1-0 | B23 | Olymp 2026 Open | 2026-09-24 |
| Mannhart, Marcel | Aziz, Matthew Luke | 1-0 | A00 | Olymp 2026 Open | 2026-09-21 |
| Mannhart, Marcel | El Zein, Zayne-Eddine | 0-1 | A00 | Olymp 2026 Open | 2026-09-19 |
| Mannhart, Marcel | Kwon, Sehyun | 1-0 | A00 | Olymp 2026 Open | 2026-09-18 |
| Mannhart, Marcel | Koita, Saidou | 1-0 | A00 | Olymp 2026 Open | 2026-09-17 |
| Mannhart, Marcel | Berthaut, Alexandre | 1/2-1/2 | A00 | Round 4: Mannhart, Marcel - Berthaut, Alexandre | 2025-11-17 |
| Mannhart, Marcel | Portelli, Matthew | 1/2-1/2 | A00 | Round 2: Mannhart, Marcel - Portelli, Matthew | 2025-11-16 |
| Mannhart, Marcel | Perchard, Matthew | 1-0 | C00 | Round 1: Mannhart, Marcel - Perchard, Matthew | 2025-11-15 |
| Mannhart Marcel | Van den Brink Peter | 0-1 | B23 | WCO | 2022-08-08 |
| Mannhart Marcel | Giron Jorge Ernesto | 1/2-1/2 | B23 | WCO | 2022-08-03 |
| Mannhart Marcel | Bachar Hachim Mahamat | 1-0 | A00 | WCO | 2022-08-01 |
| Mannhart Marcel | Dragnev Valentin | 0-1 | A00 | WCO | 2022-07-29 |