Stadium: Court 1 Round: 27 Ground: Clay
| ITF M25 Kassel | 2022/07/13 13:05 | Milan Welte v Sebastian Fanselow | 3-6,6-4,2-6 |
| 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 M25 Kassel | 2023/07/13 16:30 | Aldin Setkic v Milan Welte | 6-4,7-5 |
| ITF M25 Kassel | 2023/07/12 09:55 | Milan Welte v Robert Strombachs | 6-3,6-2 |
| ITF M25 Kassel | 2023/07/11 11:10 | Milan Welte v Stepan Mruzek | 6-2,6-1 |
| ITF M25 Kassel | 2023/07/10 13:05 | Milan Welte v Bengt Johan Reinhard | 6-0,6-0 |
| ITF M25 Marburg | 2023/07/05 09:00 | Milan Welte v Dominik Recek | 1-6,1-6 |
| ITF M15 Saarlouis | 2023/06/20 16:00 | Joao Fonseca v Milan Welte | 7-5,7-5 |
| ITF M15 Saarlouis | 2023/06/19 09:30 | Milan Welte v Maximilian Homberg | 6-3,6-1 |
| ITF M15 Saarlouis | 2023/06/18 09:00 | Milan Welte v Aaron James Williams | 6-4,7-6 |