Stadium: Court 1 Round: 25 Ground: Clay
| ITF M25 Naples | 2021/02/25 18:10 | Diego Hidalgo v Louis Wessels | 6-2,6-4 |
| ITF M25 Naples | 2021/02/24 18:45 | Louis Wessels v Bjorn Fratangelo | 6-7,7-5,6-4 |
| ITF M25 Naples | 2021/02/18 16:50 | Louis Wessels v Michael Redlicki | 2-6,0-6 |
| ITF M25 Naples | 2021/02/17 15:00 | Louis Wessels v Fletcher Scott | 6-2,6-4 |
| ITF M15 Monastir | 2021/02/03 08:30 | Louis Wessels v Benjamin Pietri | 4-6,2-6 |
| German Masters | 2020/08/06 15:00 | Jim Walder v Louis Wessels | 4-6,1-6 |
| German Masters | 2020/08/05 11:00 | Louis Wessels v Oscar Moraing | 6-3,6-2 |
| German Masters | 2020/08/04 12:40 | Louis Wessels v Oleg Khotkov | 6-1,6-1 |
| ITF M25 Meerbusch | 2021/04/13 09:30 | Mark Owen Endler v Niels Visker | 1-6,2-6 |
| ITF M25 Meerbusch | 2021/04/12 10:00 | Floris Podzimek v Niels Visker | 3-6,2-6 |
| ITF M25 Meerbusch | 2021/04/11 14:00 | Tommaso Compagnucci v Niels Visker | 3-6,1-6 |
| ITF M15 Sharm El Sheikh | 2021/03/17 08:40 | Niels Visker v Mikolaj Lorens | 5-7,4-6 |
| ITF M15 Sharm El Sheikh | 2021/03/16 09:20 | Niels Visker v Maik Steiner | 6-3,6-4 |
| ITF M15 Sharm El Sheikh | 2021/03/15 07:30 | Niels Visker v Ondrej Horak | 6-7,7-6,13-11 |
| ITF M15 Sharm El Sheikh | 2021/03/11 10:40 | Petros Chrysochos v Niels Visker | 6-3,6-3 |
| ITF M15 Sharm El Sheikh | 2021/03/10 13:45 | Makoto Ochi v Niels Visker | 6-4,3-6,6-7 |