Stadium: Court 2 Round: 44 Ground: Hardcourt outdoor
| ITF M15 Buschhausen | 2023/09/10 11:00 | Ronetto Van Tilburg v Freek Van Donselaar | 6-4,6-3 |
| ITF M15 Haren | 2023/09/04 08:00 | Tymur Bieldiugin v Freek Van Donselaar | 6-4,6-4 |
| ITF M25 Oldenzaal | 2023/08/27 14:30 | Freek Van Donselaar v Paulo Knippling | 7-5,3-6,4-10 |
| ITF M15 Trier | 2023/08/21 15:00 | Jannik Maute v Freek Van Donselaar | 6-1,6-4 |
| ITF M15 Trier | 2023/08/21 09:30 | Freek Van Donselaar v Lukas Janousek | 6-4,7-6 |
| ITF M15 Eupen | 2023/08/07 07:00 | Freek Van Donselaar v Stijn Pel | 2-6,0-6 |
| ITF M15 Metzingen | 2023/07/23 07:30 | Freek Van Donselaar v Arthur Nagel | 3-6,6-3,6-10 |
| ITF M25 Esch/Alzette | 2023/07/10 17:30 | Marlon Vankan v Freek Van Donselaar | 6-2,6-3 |
| ITF M15 Haren | 2023/09/06 08:45 | Thijmen Loof v Adrian Oetzbach | 6-4,5-7,4-6 |
| ITF M15 Haren | 2023/09/05 08:00 | Ronetto Van Tilburg v Thijmen Loof | 6-2,3-6,10-6 |
| ITF M25 Oldenzaal | 2023/08/28 17:40 | Thijmen Loof v Daniel Verbeek | 3-6,3-6 |
| ITF M15 Eindhoven | 2023/07/30 12:00 | Jack Loge v Thijmen Loof | 6-2,3-6,10-5 |
| ITF M25 Nottingham | 2023/07/09 10:00 | Thijmen Loof v Michael Shaw | 5-7,2-6 |
| ITF M25 The Hague | 2023/07/02 10:30 | Kyvan Rietkerk v Thijmen Loof | 6-3,3-6,10-6 |
| ITF M15 Alkmaar | 2023/06/26 12:00 | Roland Stuurman v Thijmen Loof | 6-2,6-4 |
| ITF M15 Alkmaar | 2023/06/25 10:00 | Jacco Arends v Thijmen Loof | 1-6,2-6 |