Stadium: Court 5 Round: 25 Ground: Clay
| 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 |
| Challenger Braunschweig | 2023/07/11 11:15 | Karl Friberg v Taro Daniel | 4-6,6-7 |
| Challenger Braunschweig | 2023/07/10 11:20 | Benjamin Hassan v Karl Friberg | 7-6,5-7,6-3 |
| Challenger Braunschweig | 2023/07/09 14:10 | Oscar Jose Gutierrez v Karl Friberg | 0-6,6-2,3-6 |
| Challenger Karlsruhe | 2023/07/03 11:40 | Karl Friberg v Akira Santillan | 6-7,7-5,1-6 |
| Challenger Karlsruhe | 2023/07/02 14:55 | Karl Friberg v Jakub Nicod | 7-6,6-3 |
| ITF M15 Alkmaar | 2023/06/30 14:00 | Karl Friberg v Jeffrey Von Der Schulenburg | 6-4,6-7,3-6 |
| ITF M15 Alkmaar | 2023/06/29 18:40 | Karl Friberg v Twan Van Zijl | 6-3,6-0 |
| ITF M15 Alkmaar | 2023/06/28 13:05 | Karl Friberg v Roland Stuurman | 6-2,6-2 |