Stadium: Schoonderbeekbouw Court Round: 25 Ground: Clay
| Challenger - Amersfoort | 2023/07/17 10:55 | Niels Visker v Ryan Nijboer | 7-6,3-6,7-5 |
| Challenger - Amersfoort | 2023/07/16 14:40 | Eduardo Ribeiro v Niels Visker | 3-6,6-7 |
| ITF - M25 Esch/Alzette | 2023/07/13 10:00 | Alexander Blockx v Niels Visker | 6-7,6-4,6-4 |
| ITF - M25 Esch/Alzette | 2023/07/12 07:45 | Raphael Calzi v Niels Visker | 4-6,3-6 |
| ITF - M25 Esch/Alzette | 2023/07/10 17:30 | Niels Visker v Kirill Mishkin | 6-4,6-4 |
| ITF - M25 Esch/Alzette | 2023/07/10 11:15 | Niels Visker v Lars Goran Verwerft | 3-6,6-1,10-3 |
| ITF - M25 Haag | 2023/07/05 12:00 | Niels Visker v Aleksandr Braynin | 1-6,6-7 |
| ITF - M15 Kamen | 2023/07/01 10:00 | Svyatoslav Gulin v Niels Visker | 5-7,6-4,6-1 |
| Challenger - Amersfoort | 2023/07/17 10:20 | Alex M Pujolras v Elmer Moller | 2-6,1-6 |
| Challenger - Amersfoort | 2023/07/16 12:45 | Sidane Pontjodikromo v Elmer Moller | 3-6,6-7 |
| ITF - M15 Alkmaar | 2023/07/02 12:10 | Elmer Moller v Sander Jong | 4-6,3-6 |
| ITF - M15 Alkmaar | 2023/07/01 13:00 | Jeffrey Von Der Schulenburg v Elmer Moller | 6-4,3-6,0-6 |
| ITF - M15 Alkmaar | 2023/06/30 12:10 | Brian Bozemoj v Elmer Moller | 2-6,4-6 |
| ITF - M15 Alkmaar | 2023/06/29 12:25 | Mees Rottgering v Elmer Moller | 2-6,3-6 |
| ITF - M15 Alkmaar | 2023/06/28 14:05 | Stijn Pel v Elmer Moller | 7-6,2-6,1-6 |
| ITF - M25 Risskov/Aarhus | 2023/06/18 08:00 | Leo Borg v Elmer Moller | 3-6,3-6 |