Stadium: Court 8 Round: 25 Ground: Clay
| ITF M25 Arlon | 2022/06/21 08:00 | Tim Sandkaulen v Constantin Frantzen | 6-1,4-6,8-10 |
| ITF M25 Arlon | 2022/06/20 10:40 | Victor Ernaelsteen v Constantin Frantzen | 3-6,2-6 |
| ITF M15 Meerbusch | 2022/05/02 08:00 | Constantin Frantzen v Marco De Rossi | 3-6,2-6 |
| ITF M15 Meerbusch | 2022/05/01 07:30 | Constantin Frantzen v Mihailo Kecojevic | 6-3,6-3 |
| ITF M25 Split | 2022/04/25 10:20 | Drazen Petrovic v Constantin Frantzen | 6-4,7-5 |
| ITF M15 Monastir | 2022/04/06 12:35 | Constantin Frantzen v Szymon Kielan | 3-6,5-7 |
| ITF M25 Monastir | 2022/04/04 13:30 | Constantin Frantzen v Jakub Katuch | 6-3,6-0 |
| ITF M25 Monastir | 2022/04/04 09:00 | Constantin Frantzen v Matthew Stubbings | 6-1,6-2 |
| ITF M25 Arlon | 2022/06/21 12:45 | Yannik Steinegger v Alexander Hoogmartens | 6-4,4-6,5-10 |
| ITF M25 Arlon | 2022/06/20 16:15 | Max Wiskandt v Alexander Hoogmartens | 2-6,6-1,15-17 |
| ITF M15 Duffel | 2022/06/14 16:25 | Simon Carr v Alexander Hoogmartens | 6-3,6-1 |
| ITF M25 Eupen | 2021/09/08 15:30 | Simon Beaupain v Alexander Hoogmartens | 7-5,3-6,6-3 |
| ITF M15 Oldenzaal | 2021/08/20 16:35 | Guy Den Heijer v Alexander Hoogmartens | 6-3,6-7,6-4 |
| ITF M15 Oldenzaal | 2021/08/19 12:45 | Alexander Hoogmartens v Ryan Nijboer | 1-6,7-5,6-3 |
| ITF M15 Oldenzaal | 2021/08/18 07:55 | Alexander Hoogmartens v Deney Wassermann | 2-6,7-6,6-0 |
| UTR Pro Tennis Series - Mülheim | 2021/07/31 08:30 | Vasile Antonescu v Alexander Hoogmartens | 5-7,7-6,6-1 |