Stadium: Court 3 Round: 54 Ground: Clay
| ITF M15 Kursumlijska Banja | 2023/05/02 09:40 | Sasa Markovic v Niels Visker | 7-6,0-6,10-7 |
| ITF M15 Kursumlijska Banja | 2023/05/01 08:00 | Danilo Raicevic v Niels Visker | 6-4,2-6,6-10 |
| ITF M15 Meerbusch | 2023/04/24 07:30 | Nico Hornitschek v Niels Visker | 6-2,6-4 |
| ITF M15 - Antalya | 2023/04/03 09:20 | Tommaso Carnevale-Miino v Niels Visker | 6-4,2-6,10-6 |
| ITF M15 - Antalya | 2023/04/02 07:00 | Guy Den Heijer v Niels Visker | 1-6,6-4,3-10 |
| ITF M15 - Antalya | 2023/03/27 07:00 | Gheorghe Claudiu Schinteie v Niels Visker | 6-4,5-7,10-6 |
| ITF M15 - Antalya | 2023/03/26 08:00 | Federico Valle v Niels Visker | 3-6,1-6 |
| ITF M25 Quinta Do Lago | 2023/03/08 16:30 | Niels Visker v Ian Luca Cervantes Tomas | 3-6,4-6 |
| ITF M25 Varnamo | 2023/05/08 13:35 | Peter Goldsteiner v William Alsterback | 6-0,6-1 |
| ITF M15 Trier | 2022/08/22 08:00 | Felix Einig v William Alsterback | 6-1,6-2 |
| ITF M15 Sofie | 2022/07/03 09:00 | William Alsterback v Ioannis Kountourakis | 1-6,1-6 |
| ITF M15 Káhira | 2022/04/13 14:55 | Fares Zakaria v William Alsterback | 6-1,6-0 |
| ITF M15 Sharm El Sheikh | 2022/04/06 14:55 | William Alsterback v Samuel Vincent Ruggeri | 2-6,1-6 |
| ITF M15 Sharm El Sheikh | 2022/03/20 13:30 | William Alsterback v Leonardo Malgaroli | 3-6,0-6 |