Stadium: Court 3 Round: 26 Ground: Clay
| ITF M15 Eindhoven | 2022/08/17 17:00 | Sander Jong v Jahn, Jeremy | 3-6,4-6 |
| ITF M15 Duffel | 2023/06/13 12:00 | Jahn, Jeremy v Adrian Oetzbach | 6-2,6-1 |
| ITF M25 Skopje | 2023/06/07 09:00 | Miljan Zekic v Jahn, Jeremy | 1-6,6-1,6-2 |
| ITF M25 Prague | 2023/05/17 10:50 | Jahn, Jeremy v Khumoyun Sultanov | 3-6,3-6 |
| ITF - M15 Antalya | 2023/05/05 08:00 | Jahn, Jeremy v Yshai Oliel | 4-6,4-6 |
| ITF - M15 Antalya | 2023/05/03 07:30 | Jahn, Jeremy v Manda, Calin | 6-1,4-6,7-5 |
| ITF - M15 Meerbusch | 2023/04/26 16:10 | Jahn, Jeremy v Deney Wassermann | 6-7,6-7 |
| Challenger - Split | 2023/04/10 08:00 | Radu Albot v Jahn, Jeremy | 6-3,7-5 |
| Challenger - Split | 2023/04/09 09:40 | Jahn, Jeremy v Rudolf Molleker | 6-3,4-6,6-2 |
| ITF M15 Duffel | 2023/06/13 10:00 | Pisane, Tom v Sander Jong | 3-6,1-6 |
| ITF M15 Duffel | 2023/06/12 12:00 | Sander Jong v Antonio Massara | 6-2,6-2 |
| UTR Pro Hilversum | 2023/06/11 06:00 | Sander Jong v Hidalgo, Gabriel Alejandro | 6-1,5-0 |
| UTR Pro Hilversum | 2023/06/10 07:30 | Sander Jong v Ivan Sergeyev | 6-2,6-0 |
| UTR Pro Hilversum | 2023/06/09 07:30 | Arthur Nagel v Sander Jong | 6-2,4-6,2-6 |
| UTR Pro Hilversum | 2023/06/08 10:25 | Ole Bredschneijder v Sander Jong | 2-6,1-6 |
| UTR Pro Hilversum | 2023/06/07 11:31 | Twan Van Zijl v Sander Jong | 3-6,0-6 |
| UTR Pro Hilversum | 2023/06/05 06:00 | Karim Al-Amin v Sander Jong | 5-7,5-7 |