Stadium: Court 14 Round: 44 Ground: Hardcourt outdoor
| ITF M15 Heraklion | 2023/10/23 06:30 | Niels Visker v Dimitris Sakellaridis | 6-2,2-6,10-8 |
| ITF M15 Heraklion | 2023/10/17 09:00 | Niels Visker v Gabriel Decamps | 5-7,2-6 |
| ITF M25 Santa Margherita | 2023/09/27 13:35 | Federico Iannaccone v Niels Visker | 6-7,7-6,7-6 |
| ITF M25 Santa Margherita | 2023/09/26 10:10 | Niels Visker v Lorenzo Rottoli | 6-4,6-4 |
| ITF M25 Santa Margherita | 2023/09/25 08:00 | Niels Visker v Guy Den Heijer | 5-7,6-4,11-9 |
| ITF M25 Santa Margherita | 2023/09/24 08:00 | Niels Visker v Daniele Minighini | 6-1,3-6,10-3 |
| ITF M25 Santa Margherita | 2023/09/18 13:00 | Niels Visker v Sidane Pontjodikromo | 7-5,4-6,2-6 |
| ITF M15 Buschhausen | 2023/09/14 10:00 | Niels Visker v Hazem Naw | 4-6,6-7 |
| ITF M15 Heraklion | 2023/10/23 10:30 | Piotr Siekanowicz v Adam Heinonen | 2-6,4-6 |
| ITF M15 Heraklion | 2023/10/17 06:30 | Adam Heinonen v Ki Lung NG | 5-7,4-6 |
| ITF M25 Falun | 2023/09/26 12:00 | Adam Heinonen v Evgeny Karlovskiy | 6-7,1-6 |
| ITF M25 Falun | 2023/09/25 08:00 | Adam Heinonen v Jack Karlsson Winstrand | 6-1,6-3 |
| ITF M25 Falun | 2023/09/24 07:55 | Adam Heinonen v Linus Videhult | 6-3,6-3 |
| ITF M15 Danderyd | 2023/09/19 12:00 | Adam Heinonen v Jakob Schnaitter | 2-6,2-6 |
| ITF M25 Ystad | 2023/08/15 12:25 | Marvin Moeller v Adam Heinonen | 6-2,6-7,7-5 |
| ITF M15 Hyvinkaa | 2023/08/04 09:00 | Adam Heinonen v Leonardo Rossi | 4-6,3-6 |