Stadium: IMS Court Round: 26 Ground: Clay
| ITF M15 Kamen | 2023/06/29 08:50 | Tom Gentzsch v Marc Majdandzic | 6-3,4-6,7-6 |
| ITF M15 Buschhausen | 2023/09/13 15:20 | Marc Majdandzic v Tommaso Carnevale-Miino | 6-3,6-3 |
| ITF M15 Allershausen | 2023/08/31 12:00 | Jannik Maute v Marc Majdandzic | 6-4,6-0 |
| ITF M15 Allershausen | 2023/08/30 10:00 | Niklas Waldner v Marc Majdandzic | 3-6,4-6 |
| ITF M15 Huy | 2023/08/24 09:11 | Jarno Jans v Marc Majdandzic | 7-5,6-2 |
| ITF M15 Huy | 2023/08/23 09:00 | Jim Hendrikx v Marc Majdandzic | 5-7,5-7 |
| ITF M15 Targu Jiu | 2023/08/16 07:00 | Marc Majdandzic v Simon A Ivanov | 1-6,2-6 |
| ITF M15 Eupen | 2023/08/13 13:00 | Marlon Vankan v Marc Majdandzic | 7-5,7-6 |
| ITF M15 Eupen | 2023/08/12 12:15 | Peter Heller v Marc Majdandzic | 5-7,1-6 |
| ITF M15 Buschhausen | 2023/09/13 14:45 | Jakob Schnaitter v Tom Gentzsch | 4-6,6-4,3-6 |
| ITF M15 Koszalin | 2023/09/08 15:00 | Dominik Kellovsky v Tom Gentzsch | 6-2,5-7,6-4 |
| ITF M15 Koszalin | 2023/09/07 16:00 | Oskar Grzegorzewski v Tom Gentzsch | 3-6,5-7 |
| ITF M15 Koszalin | 2023/09/06 14:05 | Maciej Matuszczyk v Tom Gentzsch | 5-7,7-5,2-6 |
| ITF M15 Allershausen | 2023/09/01 10:00 | Tom Gentzsch v Christoph Negritu | 2-6,6-7 |
| ITF M15 Allershausen | 2023/08/31 10:00 | Tom Gentzsch v Maik Steiner | 7-6,6-4 |
| ITF M15 Allershausen | 2023/08/30 10:00 | Tom Gentzsch v David Fix | 6-2,6-4 |
| ITF M15 Trier | 2023/08/27 09:00 | Tom Gentzsch v Hazem Naw | 4-6,2-6 |