Stadium: Court 2 Round: 27 Ground: Hardcourt outdoor
| Challenger Karlsruhe | 2023/07/03 10:35 | Denis Yevseyev v Sebastian Fanselow | 7-5,7-6 |
| Challenger Karlsruhe | 2023/07/02 14:15 | Andrew Paulson v Sebastian Fanselow | 2-6,5-7 |
| ITF M25 Arlon | 2023/06/29 12:00 | Sandro Kopp v Sebastian Fanselow | 6-4,4-6,7-6 |
| ITF M25 Arlon | 2023/06/28 07:50 | Boris Fassbender v Sebastian Fanselow | 2-6,3-6 |
| Challenger Parma | 2023/06/18 12:00 | Andrea Arnaboldi v Sebastian Fanselow | 6-2,6-4 |
| Challenger Heilbronn | 2023/06/06 12:10 | Sebastian Fanselow v Rudolf Molleker | 4-6,7-6,1-6 |
| Challenger Heilbronn | 2023/06/05 10:30 | Sebastian Fanselow v Vladyslav Orlov | 6-3,3-6,6-3 |
| Challenger Heilbronn | 2023/06/04 15:25 | Daniel Dutra Da Silva v Sebastian Fanselow | 4-6,6-7 |
| ITF M15 Eindhoven | 2023/07/30 07:00 | Stian Klaassen v Twan Van Zijl | 6-3,6-1 |
| ITF M25 The Hague | 2023/07/02 08:00 | Twan Van Zijl v Collin Altamirano | 1-6,5-7 |
| ITF M15 Alkmaar | 2023/06/29 18:40 | Karl Friberg v Twan Van Zijl | 6-3,6-0 |
| ITF M15 Alkmaar | 2023/06/26 08:00 | Masato Perera v Twan Van Zijl | 4-6,6-7 |
| UTR Pro Hilversum | 2023/06/11 07:30 | Twan Van Zijl v Jip Van Assendelft | 4-6,4-5 |
| UTR Pro Hilversum | 2023/06/10 09:00 | Alessandro-D Ventre v Twan Van Zijl | 0-6,3-6 |
| UTR Pro Hilversum | 2023/06/09 06:00 | Twan Van Zijl v Karim Al-Amin | 6-1,3-2 |
| UTR Pro Hilversum | 2023/06/07 11:31 | Twan Van Zijl v Sander Jong | 3-6,0-6 |