| UTR Pro Tennis Series Mulheim | 2021/07/29 13:30 | Mark Wallner v Guy Den Heijer | 2-6,3-6 |
| UTR Pro Tennis Series Mulheim | 2021/07/28 11:00 | Mark Wallner v Tim Sandkaulen | 6-7,5-6 |
| UTR Pro Tennis Series Mulheim | 2021/07/27 09:30 | Mark Wallner v Matthew Thomson | 7-6,7-6 |
| UTR Pro Tennis Series Mulheim | 2021/07/26 11:00 | Billy Harris v Mark Wallner | 7-6,7-6 |
| UTR Pro Tennis Series Mulheim | 2021/07/30 07:00 | Stefan Peter Hampe v Hazem Naw | 3-6,5-7 |
| UTR Pro Tennis Series Mulheim | 2021/07/28 12:30 | Stefan Peter Hampe v Alexander Hoogmartens | 2-6,1-6 |
| UTR Pro Tennis Series Mulheim | 2021/07/27 08:00 | Stefan Peter Hampe v Francesco Vilardo | 2-6,4-6 |
| UTR Pro Tennis Series Mulheim | 2021/07/26 08:00 | Jim Hendrikx v Stefan Peter Hampe | 2-6,4-5 |