Stadium: CC Round: 28 Ground: Clay
| ITF M15 Trier | 2023/08/21 12:30 | Davud Amirov v Tom Schonenberg | 1-6,7-5,7-10 |
| ITF M25 The Hague | 2023/07/03 13:15 | Tom Schonenberg v Fons Van Sambeek | 3-6,2-6 |
| ITF M25 The Hague | 2023/07/02 08:00 | Jack Loge v Tom Schonenberg | 7-5,5-7,7-10 |
| ITF M15 Saarlouis | 2023/06/18 09:00 | Tom Schonenberg v Maximilian Homberg | 3-6,2-6 |
| ITF M15 Meerbusch | 2023/04/25 08:00 | Florian Broska v Tom Schonenberg | 6-2,6-4 |
| ITF M15 Meerbusch | 2023/04/24 12:00 | Tom Schonenberg v Zak Talic | 6-2,6-3 |
| ITF M15 Meerbusch | 2023/04/23 08:00 | Sam Oster v Tom Schonenberg | 4-6,1-6 |
| ITF M15 Antalya | 2023/04/17 12:40 | Sean Hess v Tom Schonenberg | 6-4,6-4 |
| ITF M15 Uberlingen | 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 | 2023/08/06 16:55 | Tom Gentzsch v Maxime Mora | 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 Gian Luca Tanner | 2-6,4-6 |
| ITF M25 Kassel | 2023/07/12 11:35 | Tom Gentzsch v Aldin Setkic | 4-6,2-6 |