Stadium: Court 1 Round: 25 Ground: Hardcourt indoor
| Challenger Ismaning | 2018/10/18 11:30 | Jeremy Jahn v Louis Wessels | 7-6,6-4 |
| Challenger Napoli | 2021/10/11 08:30 | Louis Wessels v Alvaro Lopez San Martin | 6-7,4-6 |
| ITF M25 Skopje | 2021/10/03 09:00 | Louis Wessels v Matteo Arnaldi | 1-6,0-6 |
| ITF M25 Skopje | 2021/10/02 09:30 | Aldin Setkic v Louis Wessels | 2-6,7-6,3-6 |
| ITF M25 Skopje | 2021/10/01 14:30 | Louis Wessels v Clement Tabur | 7-5,6-1 |
| ITF M25 Skopje | 2021/10/01 08:00 | Louis Wessels v Besir Durguti | 6-0,6-1 |
| ITF M25 Skopje | 2021/09/29 09:40 | Louis Wessels v Felix Gill | 6-1,6-2 |
| ITF M25 Madrid | 2021/09/19 08:50 | Luca Nardi v Louis Wessels | 7-5,6-2 |
| ITF M25 Madrid | 2021/09/18 13:00 | Louis Wessels v Carlos Lopez Montagud | 4-6,6-3,7-6 |
| ITF M25 Ueberlingen | 2021/08/18 10:10 | Jeremy Jahn v Alexander Cozbinov | 3-6,7-6,1-6 |
| ITF M25 Bolzano | 2021/08/03 13:50 | Andrea Gola v Jeremy Jahn | 4-6,6-2,6-3 |
| ITF M25 Denia | 2021/07/27 17:25 | Carlos Lopez Montagud v Jeremy Jahn | 6-4,6-2 |
| ITF M25 Gandia | 2021/07/21 16:00 | Jordi Mas De Ugarte v Jeremy Jahn | 6-4,6-3 |
| Challenger Amersfoort | 2021/07/12 09:00 | Jeremy Jahn v Johan Nikles | 2-6,3-6 |
| Challenger Amersfoort | 2021/07/11 11:40 | Jeremy Jahn v Arjun Kadhe | 6-2,6-7,6-4 |
| ITF M25 Marburg | 2021/07/06 16:40 | Alexander Donski v Jeremy Jahn | 6-2,6-2 |
| ITF M25 The Hague | 2021/06/29 09:00 | Jeremy Jahn v Javier Barranco Cosano | 2-6,3-6 |