| UTR Pro Tennis Series Mulheim | 2021/10/13 10:00 | Edison Ambarzumjan v Dzhavakian, Yurii | 3-6,4-6 |
| UTR Pro Tennis Series Mulheim | 2021/10/12 08:30 | Edison Ambarzumjan v Schmitz, Constantin | 2-6,2-5 |
| UTR Pro Tennis Series Mulheim | 2021/10/11 07:00 | Edison Ambarzumjan v Weng, Jing Long | 1-6,1-6 |
| UTR Pro Tennis Series Mulheim | 2021/09/25 07:00 | Carretero, Pablo v Edison Ambarzumjan | 6-4,6-2 |
| UTR Pro Tennis Series Mulheim | 2021/09/24 08:00 | Edison Ambarzumjan v Artem Podorozhnyi | 1-6,3-5 |
| UTR Pro Tennis Series Mulheim | 2021/09/22 12:30 | Edison Ambarzumjan v Jurriaan Bol | 6-4,2-6,2-6 |
| UTR Pro Tennis Series Mulheim | 2021/09/21 08:00 | Edison Ambarzumjan v Keisidis, Christos | 6-2,4-6,5-1 |
| UTR Pro Tennis Series Mulheim | 2021/09/20 09:30 | Colin Sinclair v Edison Ambarzumjan | 7-5,5-4 |
| UTR Pro Tennis Series Mulheim | 2021/10/13 10:00 | Weng, Jing Long v Sandkaulen, Tim | 3-6,2-5 |
| UTR Pro Tennis Series Mulheim | 2021/10/11 07:00 | Schmitz, Constantin v Sandkaulen, Tim | 6-4,7-5 |
| UTR Pro Tennis Series Mulheim | 2021/07/31 08:30 | Hazem Naw v Sandkaulen, Tim | 6-4,7-6 |
| UTR Pro Tennis Series Mulheim | 2021/07/29 13:30 | Matthew Thomson v Sandkaulen, Tim | 6-7,1-6 |
| UTR Pro Tennis Series Mulheim | 2021/07/29 07:00 | Billy Harris v Sandkaulen, Tim | 6-7,3-6 |
| UTR Pro Tennis Series Mulheim | 2021/07/28 11:00 | Mark Wallner v Sandkaulen, Tim | 6-7,5-6 |
| UTR Pro Tennis Series Mulheim | 2021/07/26 11:00 | Guy Den Heijer v Sandkaulen, Tim | 7-5,6-3 |
| Braunchsweig, Germany | 2021/07/05 09:30 | Sandkaulen, Tim v Daniel Michalski | 3-6,5-7 |