Stadium: Court 6 Round: 19 Ground: Clay
| ITF M25 Wetzlar | 2023/08/06 10:00 | Sebastian Fanselow v Tristan Lamasine | 3-6,1-6 |
| Challenger Forli Qual | 2022/01/16 10:50 | Sebastian Fanselow v Tristan Lamasine | 4-6,6-3,3-6 |
| Challenger Hamburg | 2023/10/21 10:00 | Dennis Novak v Tristan Lamasine | 4-6,6-3,6-4 |
| Challenger Hamburg | 2023/10/20 10:35 | Akira Santillan v Tristan Lamasine | 4-6,2-6 |
| Challenger Hamburg | 2023/10/19 09:00 | Tristan Lamasine v Maximilian Neuchrist | 7-5,6-4 |
| Challenger Hamburg | 2023/10/17 12:45 | Tristan Lamasine v Manuel Guinard | 6-0,6-0 |
| Challenger Hamburg | 2023/10/16 14:15 | Tristan Lamasine v Jakob Schnaitter | 6-2,6-1 |
| Challenger Hamburg | 2023/10/15 16:00 | Tristan Lamasine v John Sperle | 2-6,6-2,6-0 |
| Challenger Mouilleron le Captif | 2023/10/02 08:30 | Tristan Lamasine v Adrien Gobat | 5-7,5-7 |
| Challenger Mouilleron le Captif | 2023/10/01 09:25 | Tristan Lamasine v Antoine Hoang | 2-6,6-3,6-3 |
| Challenger Oeiras | 2024/01/01 18:10 | Cem Ilkel v Sebastian Fanselow | 6-3,3-6,7-5 |
| Challenger Maia | 2023/11/28 12:15 | Sebastian Fanselow v Karl Friberg | 6-3,3-6,4-6 |
| Challenger Champaign | 2023/11/16 18:20 | Sebastian Fanselow v Alex Michelsen | 3-6,2-6 |
| Challenger Champaign | 2023/11/15 00:15 | Aidan Mchugh v Sebastian Fanselow | 2-6,6-4,3-6 |
| Challenger Knoxville | 2023/11/09 16:00 | Zachary Svajda v Sebastian Fanselow | 6-2,7-5 |
| Challenger Knoxville | 2023/11/07 21:40 | Sebastian Fanselow v Cannon Kingsley | 6-4,6-2 |
| Challenger Knoxville | 2023/11/06 17:35 | Sebastian Fanselow v Alex Rybakov | 6-7,6-4,6-4 |
| Challenger Knoxville | 2023/11/05 19:00 | Sebastian Fanselow v Kyle Kang | 6-3,6-3 |