| UTR Pro Tennis Series Mulheim | 2021/07/30 07:00 | Tim Gennes v Vasile Antonescu | 0-6,6-7 |
| UTR Pro Tennis Series Mulheim | 2021/07/28 12:00 | Tim Gennes v John Sperle | 1-6,3-6 |
| UTR Pro Tennis Series Mulheim | 2021/07/28 07:00 | Tim Gennes v Hendrik Jebens | 1-6,3-5 |
| UTR Pro Tennis Series Mulheim | 2021/07/26 12:30 | Marvin Schaber v Tim Gennes | 6-2,7-6 |
| UTR Pro Tennis Series Mulheim | 2021/07/30 07:00 | Benjamin Dhoe v Herman M M Knoop | 6-3,6-3 |
| UTR Pro Tennis Series Mulheim | 2021/07/29 15:00 | Francois Musitelli v Herman M M Knoop | 7-6,6-2 |
| UTR Pro Tennis Series Mulheim | 2021/07/28 07:00 | Ryan Goetz v Herman M M Knoop | 6-3,6-7,5-0 |
| UTR Pro Tennis Series Mulheim | 2021/07/26 09:30 | Herman M M Knoop v Maxim Verboven | 4-6,4-5 |
| ITF M25 Alkmaar | 2021/06/21 16:00 | Mats Rosenkranz v Herman M M Knoop | 6-2,6-3 |