Stadium: Court 1 Round: 25 Ground: Hardcourt indoor
| ITF M25 Esch/Alzette | 2023/07/10 14:35 | Fons Van Sambeek v Joel Angel Lucero | 6-0,6-2 |
| ITF M25 The Hague | 2023/07/06 09:00 | Fons Van Sambeek v Guy Den Heijer | 4-6,6-1,2-6 |
| ITF M25 The Hague | 2023/07/03 13:15 | Tom Schonenberg v Fons Van Sambeek | 3-6,2-6 |
| ITF M25 The Hague | 2023/07/02 10:30 | Ying Hou v Fons Van Sambeek | 2-6,1-6 |
| ITF M25 Netanya | 2023/06/28 08:15 | Fons Van Sambeek v Noah Schachter | 4-6,1-6 |
| ITF M25 Netanya | 2023/06/27 08:20 | Eyal Shyovitz v Fons Van Sambeek | 3-6,1-6 |
| ITF M25 Netanya | 2023/06/26 10:45 | Niv Zuckerman v Fons Van Sambeek | 5-7,1-6 |
| ITF M25 Netanya | 2023/06/24 08:35 | Martyn Pawelski v Fons Van Sambeek | 6-4,7-6 |
| ITF M25 Arlon | 2023/06/30 09:00 | Tibo Colson v Alex Knaff | 7-6,6-4 |
| ITF M25 Arlon | 2023/06/29 09:50 | Raphael Calzi v Alex Knaff | 2-6,1-6 |
| ITF M25 Arlon | 2023/06/28 10:35 | Alex Knaff v Mathys Erhard | 7-6,6-4 |
| ITF M15 Saarlouis | 2023/06/22 12:30 | Sander Jong v Alex Knaff | 6-4,6-3 |
| ITF M15 Saarlouis | 2023/06/21 11:20 | Masato Perera v Alex Knaff | 2-6,3-6 |
| ITF M15 Duffel | 2023/06/13 10:00 | Alex Knaff v Michiel de Krom | 6-7,3-6 |
| ITF M15 Pazardzhik | 2023/05/26 07:00 | Leonardo Rossi v Alex Knaff | 6-1,6-3 |
| ITF M15 Pazardzhik | 2023/05/25 07:00 | Marco Miceli v Alex Knaff | 6-2,1-6,3-6 |