Stadium: CC Round: 25 Ground: Clay
| ITF M15 Ueberlingen | 2023/08/16 10:50 | Fnu Nidunjianzan v Tom Gentzsch | 6-4,4-6,6-4 |
| Challenger Meerbusch | 2023/08/08 09:00 | Tibo Colson v Tom Gentzsch | 6-1,6-4 |
| Challenger Meerbusch | 2023/08/07 13:40 | Tom Gentzsch v Mora, Maxime | 5-7,6-4,6-1 |
| ITF M15 Eindhoven | 2023/08/03 14:30 | Sander Jong v Tom Gentzsch | 1-6,6-2,6-3 |
| ITF M15 Eindhoven | 2023/08/02 14:00 | Christian Sigsgaard v Tom Gentzsch | 6-2,4-6,3-6 |
| ITF M15 Eindhoven | 2023/08/01 11:05 | Maciej Rajski v Tom Gentzsch | 4-6,6-4,3-6 |
| ITF M15 Metzingen | 2023/07/25 11:00 | Tom Gentzsch v Tanner, Gian Luca | 2-6,4-6 |
| ITF M25 Kassel | 2023/07/12 11:35 | Tom Gentzsch v Aldin Setkic | 4-6,2-6 |
| ITF M15 Trier | 2023/08/21 15:00 | Karlo Cubelic v Steinorth, Torben | 4-6,6-0,6-10 |
| ITF M15 Trier | 2023/08/21 09:30 | Hoogland, Joris v Steinorth, Torben | 7-6,5-7,7-10 |
| ITF M25 Wetzlar | 2023/07/31 08:00 | Daniel Salazar v Steinorth, Torben | 6-3,6-2 |
| ITF M15 Metzingen | 2023/07/23 07:30 | Alazmeh, Taym v Steinorth, Torben | 6-7,7-6,10-4 |
| ITF M15 Uslar | 2023/07/17 08:00 | Bruna, Esteban v Steinorth, Torben | 6-4,6-3 |
| ITF M15 Uslar | 2023/07/17 08:00 | Steinorth, Torben v Luca Hesselmann | 1-6,6-1,10-8 |
| ITF - M15 Meerbusch | 2023/04/24 08:00 | Steinorth, Torben v John Sperle | 3-6,3-6 |
| ITF - M25 Nussloch | 2023/01/23 09:00 | Steinorth, Torben v Vojtech Petr | 4-6,4-6 |