Stadium: Court 17 Round: 26 Ground: Clay
| ITF M15 Trier | 2023/08/23 10:55 | Marlon Vankan v Stepan Baum | 2-6,0-6 |
| ITF M15 Trier | 2023/08/21 13:00 | Stepan Baum v Tristan Reiff | 6-2,6-2 |
| ITF M15 Uslar | 2023/07/17 16:30 | Facundo Yunis v Stepan Baum | 6-3,6-2 |
| ITF M15 Uslar | 2023/07/17 10:30 | Richard Antoni v Stepan Baum | 4-6,5-7 |
| ITF M15 Wroclaw | 2023/06/28 10:05 | Zura Tkemaladze v Stepan Baum | 6-3,3-6,6-1 |
| ITF M15 Wroclaw | 2023/06/26 12:45 | Stepan Baum v Marc Antoine Gaillard | 6-3,6-7,10-7 |
| ITF M15 Wroclaw | 2023/06/25 11:30 | William Grant v Stepan Baum | 2-6,2-6 |
| ITF M25 Most | 2023/05/21 10:30 | Ondrej Hujo v Stepan Baum | 5-7,0-6 |
| ITF M15 Trier | 2023/08/23 11:00 | David Eichenseher v Jannik Opitz | 6-4,6-7,4-6 |
| ITF M25 Wetzlar | 2023/08/03 08:00 | Niklas Schell v Jannik Opitz | 6-4,6-4 |
| ITF M15 Uslar | 2023/07/19 10:00 | Jannik Opitz v Esteban Bruna | 2-6,4-6 |
| Challenger Braunschweig | 2023/07/09 12:40 | Daniel Masur v Jannik Opitz | 7-5,6-4 |
| ITF M25 Nussloch | 2023/01/27 13:55 | Hazem Naw v Jannik Opitz | 6-4,1-6,7-6 |
| ITF M25 Nussloch | 2023/01/26 12:15 | Jannik Opitz v Dominik Recek | 6-7,7-6,7-6 |
| ITF M25 Nussloch | 2023/01/25 15:05 | Tim Sandkaulen v Jannik Opitz | 6-7,1-6 |
| ITF M25 Nussloch | 2023/01/23 15:50 | Lukas Pokorny v Jannik Opitz | 2-6,6-7 |