Stadium: Court 6 Round: 26 Ground: Clay
| ITF M25 Nussloch | 2023/01/24 11:45 | Yannik Kelm v Peter Heller | 5-7,2-6 |
| Challenger Heilbronn | 2022/05/08 11:35 | Sumit Nagal v Yannik Kelm | 6-2,6-1 |
| 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 |