Stadium: Court 10 Round: 28 Ground: Clay
| ITF M25 The Hague | 2023/07/07 16:30 | Guy Den Ouden v Ryan Nijboer | 6-1,6-2 |
| ITF M25 The Hague | 2023/07/06 16:45 | Collin Altamirano v Guy Den Ouden | 6-7,6-3,2-6 |
| ITF M25 The Hague | 2023/07/04 17:00 | Alec Deckers v Guy Den Ouden | 6-7,6-7 |
| ITF M15 Alkmaar | 2023/06/29 12:05 | Jeffrey Von Der Schulenburg v Guy Den Ouden | 6-4,3-6,7-5 |
| ITF M15 Alkmaar | 2023/06/28 11:30 | Deney Wassermann v Guy Den Ouden | 6-7,5-7 |
| ITF M25 Risskov/Aarhus | 2023/06/17 09:00 | Guy Den Ouden v Leo Borg | 6-3,4-6,1-6 |
| ITF M25 Risskov/Aarhus | 2023/06/16 09:55 | Max Houkes v Guy Den Ouden | 6-3,3-6,4-6 |
| ITF M25 Risskov/Aarhus | 2023/06/15 08:30 | Philipp Pavlenko v Guy Den Ouden | 2-6,1-6 |
| ITF M25 The Hague | 2023/07/07 11:35 | Eric Vanshelboim v Guy Den Heijer | 6-2,6-2 |
| ITF M25 The Hague | 2023/07/06 12:10 | Eric Vanshelboim v Olaf Pieczkowski | 6-0,6-4 |
| ITF M25 The Hague | 2023/07/04 10:00 | Eric Vanshelboim v Brian Bozemoj | 6-3,6-1 |
| ITF M15 Celje | 2023/06/28 14:45 | Eric Vanshelboim v Filip Jeff Planinsek | 6-2,2-6,6-4 |
| Challenger Lyon | 2023/06/12 10:00 | Maxime Janvier v Eric Vanshelboim | 6-2,6-3 |
| Challenger Lyon | 2023/06/11 14:50 | Mirko Martinez v Eric Vanshelboim | 4-6,6-4,6-7 |
| ITF M15 Addis Ababa | 2023/05/27 08:15 | Rishab Agarwal v Eric Vanshelboim | 6-7,6-2,6-0 |
| ITF M15 Addis Ababa | 2023/05/26 08:30 | Karan Singh v Eric Vanshelboim | 2-6,6-4,3-6 |