Stadium: Centre Court Round: 26 Ground: Clay
| ITF M25 Kassel | 2023/07/11 14:45 | Ryan Nijboer v Viacheslav Bielinskyi | 6-2,6-2 |
| 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 14:05 | Aleksandr Braynin v Ryan Nijboer | 4-6,6-7 |
| ITF M25 The Hague | 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 |
| ITF M15 Alkmaar | 2023/06/28 11:40 | Ryan Nijboer v Nicolas Kobelt | 6-2,6-1 |
| ITF M15 Duffel | 2023/06/17 11:15 | Ryan Nijboer v Jeremy Jahn | 2-6,1-6 |
| ITF M25 Kassel | 2023/07/11 13:00 | Toby Alex Kodat v Andrew Paulson | 3-6,2-6 |
| Challenger Karlsruhe | 2023/07/02 14:15 | Andrew Paulson v Sebastian Fanselow | 2-6,5-7 |
| ITF M25 Poprad | 2023/06/25 09:00 | Andrew Paulson v Patrik Rikl | 6-3,6-7,4-6 |
| ITF M25 Poprad | 2023/06/24 09:45 | Toby Alex Kodat v Andrew Paulson | 3-6,4-6 |
| ITF M25 Poprad | 2023/06/23 09:45 | Michael Vrbensky v Andrew Paulson | 6-7,3-6 |
| ITF M25 Poprad | 2023/06/21 08:00 | Jasza Szajrych v Andrew Paulson | 4-6,2-6 |
| ITF M25 Jablonec Nad Nisou | 2023/06/02 09:00 | Murkel Dellien v Andrew Paulson | 1-6,3-6 |
| ITF M25 Jablonec Nad Nisou | 2023/06/01 11:05 | Jakub Nicod v Andrew Paulson | 2-6,5-7 |