Stadium: Van Mossel Kia Court Round: 19 Ground: Clay
| ITF M15 Skopje | 2021/06/02 09:55 | Niels Visker v Ryan Nijboer | 6-4,3-6,4-6 |
| 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 |
| ITF M15 Kamen | 2023/06/30 15:00 | Arthur Reymond v Niels Visker | 4-6,5-7 |
| Challenger Amersfoort | 2023/07/16 14:55 | Ryan Nijboer v Yanaki Milev | 6-0,6-3 |
| ITF M25 Kassel | 2023/07/13 14:25 | Ryan Nijboer v Andrew Paulson | 6-7,4-6 |
| ITF M25 Kassel | 2023/07/11 14:45 | Ryan Nijboer v Viacheslav Bielinskyi | 6-2,6-2 |
| ITF M25 Haag | 2023/07/07 16:30 | Guy Den Ouden v Ryan Nijboer | 6-1,6-2 |
| ITF M25 Haag | 2023/07/06 14:05 | Aleksandr Braynin v Ryan Nijboer | 4-6,6-7 |
| ITF M25 Haag | 2023/07/05 15:15 | Felix Corwin v Ryan Nijboer | 3-6,4-6 |
| ITF M15 Alkmaar | 2023/06/30 12:05 | Ryan Nijboer v Sander Jong | 3-6,4-6 |
| ITF M15 Alkmaar | 2023/06/29 10:30 | Ryan Nijboer v Teun Rozenberg | 6-4,6-7,6-3 |