Stadium: Court 4 Round: 26 Ground: Carpet indoor
| ITF - M15 Buschhausen | 2023/09/14 11:45 | Marc Majdandzic v Tom Gentzsch | 3-6,6-4,6-4 |
| ITF - M15 Kamen | 2023/06/29 08:50 | Tom Gentzsch v Marc Majdandzic | 6-3,4-6,7-6 |
| ITF - M15 Cadolzburg | 2024/01/16 12:15 | Marc Majdandzic v Vitek Horak | 7-5,7-6 |
| ITF - M15 Buschhausen | 2023/09/15 13:45 | Jonas Forejtek v Marc Majdandzic | 6-4,6-2 |
| ITF - M15 Buschhausen | 2023/09/14 11:45 | Marc Majdandzic v Tom Gentzsch | 3-6,6-4,6-4 |
| 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 09:00 | 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 Cadolzburg | 2024/01/16 09:55 | Jack Karlsson Winstrand v Tom Gentzsch | 6-7,6-4,2-6 |
| German Championship | 2023/12/07 12:00 | Tom Gentzsch v Max Hans Rehberg | 2-6,7-5,3-6 |
| German Championship | 2023/12/06 12:05 | Luca Matteo Sobbe v Tom Gentzsch | 3-6,2-6 |
| Challenger - Maia | 2023/11/29 15:25 | Fabio Fognini v Tom Gentzsch | 6-7,6-3,7-5 |
| Challenger - Maia | 2023/11/27 11:00 | Miguel Damas v Tom Gentzsch | 6-2,3-6,1-6 |
| Challenger - Maia | 2023/11/26 11:00 | Federico Bertuccioli v Tom Gentzsch | 4-6,2-6 |
| ITF - M15 Monastir | 2023/11/15 08:30 | Tom Gentzsch v Nikola Basic | 6-4,1-6,3-6 |
| ITF - M15 Monastir | 2023/11/10 09:00 | Juan Bautista Otegui v Tom Gentzsch | 6-3,6-4 |