Stadium: Court 6 Round: 26 Ground: Clay
| ITF M15 Xativa | 2023/08/01 15:30 | Ryan Nijboer v Toprak Avcibasi | 7-6,6-7,6-4 |
| ITF M25 Denia | 2023/07/26 16:25 | Sergi Perez Contri v Ryan Nijboer | 6-4,6-3 |
| Challenger Amersfoort | 2023/07/17 10:55 | Niels Visker v Ryan Nijboer | 7-6,3-6,7-5 |
| 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 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 M15 Xativa | 2023/08/02 06:25 | Alejandro T Alvarez v Xavi Matas Ortega | 6-0,6-2 |
| ITF M15 Xativa | 2023/08/01 07:00 | Alberto C Sanchez v Alejandro T Alvarez | 6-2,6-2 |
| ITF M15 Xativa | 2023/07/31 07:00 | Pedro A De Almeida Santos v Alejandro T Alvarez | 2-6,1-6 |
| ITF M15 Xativa | 2023/07/30 07:00 | Edoardo Cherie Ligniere v Alejandro T Alvarez | 3-6,5-7 |
| ITF M25 Denia | 2023/07/23 14:30 | Alejandro Garcia v Alejandro T Alvarez | 6-4,6-4 |
| ITF M25 Mungia | 2023/06/19 07:30 | Alejandro T Alvarez v Jorge Plans | 2-6,6-7 |
| ITF M25 Mungia | 2023/06/18 07:00 | Alejandro T Alvarez v Alex Padro Parra | 6-0,3-6,10-5 |
| ITF M25 Portimao | 2023/03/15 10:00 | Alejandro T Alvarez v Skander Mansouri | 6-4,3-6,4-6 |