Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| ITF M25 - Santa Margherita | 2023/09/25 08:00 | Niels Visker v Guy Den Heijer | 5-7,6-4,11-9 |
| ITF M15 - Antalya | 2023/04/02 07:00 | Guy Den Heijer v Niels Visker | 1-6,6-4,3-10 |
| ITF M15 - Sharm El Sheikh | 2024/02/08 08:00 | Guy Den Heijer v Saba Purtseladze | 3-6,3-6 |
| ITF M15 - Sharm El Sheikh | 2024/02/07 13:05 | Karim Ibrahim v Guy Den Heijer | 6-4,6-7,4-6 |
| ITF M15 - Sharm El Sheikh | 2024/02/06 08:00 | Guy Den Heijer v Milan Drinic | 6-4,6-4 |
| ITF M15 - Sharm El Sheikh | 2024/02/05 10:30 | Guy Den Heijer v Niklas Grunewald | 6-1,6-4 |
| ITF M15 - Zahra | 2023/12/13 06:55 | Guy Den Heijer v Alastair Gray | 4-6,4-6 |
| ITF M15 - Zahra | 2023/12/04 06:55 | Guy Den Heijer v Raffael Schaer | 3-6,4-6 |
| ITF M15 - Al Zahra | 2023/11/29 10:20 | Ali Habib v Guy Den Heijer | 6-4,6-3 |
| ITF M25 - Heraklion | 2023/11/11 08:30 | Guy Den Heijer v Cezar Cretu | 4-6,4-6 |
| ITF M15 - Sharm El Sheikh | 2024/02/09 08:00 | Federico Bondioli v Niels Visker | 6-1,6-3 |
| ITF M15 - Sharm El Sheikh | 2024/02/08 09:35 | Alec Beckley v Niels Visker | 4-6,3-6 |
| ITF M15 - Sharm El Sheikh | 2024/02/07 11:35 | Pavel Verbin v Niels Visker | 1-6,7-6,3-6 |
| ITF M15 - Sharm El Sheikh | 2024/02/01 09:25 | Maxim Zhukov v Niels Visker | 5-7,4-6 |
| ITF M15 - Sharm El Sheikh | 2024/01/31 08:00 | Henri Haupt v Niels Visker | 2-6,6-7 |
| ITF M15 - Cadolzburg | 2024/01/19 10:00 | Daniel Masur v Niels Visker | 6-4,6-4 |
| ITF M15 - Cadolzburg | 2024/01/18 11:35 | Patrick Kaukovalta v Niels Visker | 3-6,3-6 |
| ITF M15 - Cadolzburg | 2024/01/16 09:55 | Mischa Lanz v Niels Visker | 3-6,6-7 |