Stadium: Court 3 Round: 25 Ground: Clay
| ITF M15 Girona | 2021/10/24 09:00 | Pol Toledo Bague v Alexander Weis | 2-6,7-6,1-6 |
| ITF M15 Girona | 2021/10/23 09:00 | Carlos Sanchez Jover v Alexander Weis | 4-6,4-6 |
| ITF M15 Girona | 2021/10/22 09:00 | Alexander Weis v Yan Bondarevskiy | 6-1,6-2 |
| ITF M15 Girona | 2021/10/21 11:20 | Alexander Weis v Diego A B Sanchez | 6-4,6-4 |
| ITF M15 Girona | 2021/10/19 09:00 | Alexander Weis v Manish Sureshkumar | 2-6,7-6,6-2 |
| Challenger Napoli Qual | 2021/10/10 14:00 | Alexander Weis v Filip Cristian Jianu | 3-6,6-4,3-6 |
| ITF M15 Platja D'Aro | 2021/10/05 10:45 | Alexander Weis v Daniel Merida Aguilar | 4-6,3-6 |
| Challenger Murcia | 2021/09/26 13:30 | Corentin Denolly v Alexander Weis | 4-6,6-1,6-4 |
| ITF M15 Antalya | 2021/10/19 10:35 | Lambert Ruland v Richard Zusman | 6-4,6-3 |
| ITF M15 Antalya | 2021/10/18 09:55 | Richard Zusman v Benedikt Emesz | 6-3,7-5 |
| ITF M15 Antalya | 2021/10/12 08:40 | Richard Zusman v Alberto Morolli | 4-6,6-3,9-11 |
| ITF M15 Antalya | 2021/10/11 11:10 | Mert Naci Turker v Richard Zusman | 4-6,6-4,9-11 |
| ITF M15 Antalya | 2021/10/10 07:00 | Elias Julian Werner v Richard Zusman | 3-6,2-6 |
| UTR Pro Tennis Series Barcelona | 2021/10/01 08:00 | Thomas Laurent v Richard Zusman | 6-1,6-2 |
| UTR Pro Tennis Series Barcelona | 2021/09/30 09:30 | Bekkhan Atlangeriev v Richard Zusman | 6-2,6-2 |
| UTR Pro Tennis Series Barcelona | 2021/09/29 13:30 | Alexis Klegou v Richard Zusman | 6-2,5-4 |