Stadium: Court 2 Round: 26 Ground: Hardcourt outdoor
| ITF M25 Portimao | 2023/03/14 12:25 | Tiago Pereira v Sebastian Fanselow | 6-2,3-6,1-6 |
| ITF M15 Frankfurt Am Main | 2023/08/08 13:00 | Rostislav Galfinger v Sebastian Fanselow | 1-6,7-6,2-6 |
| ITF M25 Wetzlar | 2023/08/06 10:00 | Sebastian Fanselow v Tristan Lamasine | 3-6,1-6 |
| ITF M25 Wetzlar | 2023/08/05 12:30 | Orlando Luz v Sebastian Fanselow | 6-7,2-6 |
| ITF M25 Wetzlar | 2023/08/04 11:10 | Sebastian Fanselow v Milan Welte | 7-5,4-6,6-3 |
| ITF M25 Wetzlar | 2023/08/04 08:00 | Sebastian Fanselow v Niklas Schell | 6-4,6-3 |
| ITF M25 Wetzlar | 2023/08/03 09:35 | Sebastian Fanselow v Yan Sabanin | 6-3,6-4 |
| 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 Idanha-A-Nova | 2023/09/01 08:00 | Alberto Barroso Campos v Tiago Pereira | 7-6,7-6 |
| ITF M25 Idanha-A-Nova | 2023/08/31 08:00 | Tiago Pereira v Martyn Pawelski | 7-6,6-3 |
| ITF M25 Idanha-A-Nova | 2023/08/30 08:00 | Tiago Pereira v Daniel Batista | 6-4,6-3 |
| ITF M25 Idanha-A-Nova | 2023/08/24 08:00 | Kacper Zuk v Tiago Pereira | 6-2,6-2 |
| ITF M25 Idanha-A-Nova | 2023/08/23 08:00 | Tiago Pereira v Patricio Alvarado | 6-4,6-3 |
| ITF M15 Monastir | 2023/08/17 09:15 | Tiago Pereira v Lukas Pokorny | 2-6,4-6 |
| ITF M15 Monastir | 2023/08/15 10:05 | Denis Constantin Spiridon v Tiago Pereira | 1-6,4-6 |
| ITF M15 Monastir | 2023/08/09 09:25 | Tiago Pereira v Alberto Barroso Campos | 1-6,1-6 |