Stadium: Court 7 Round: 27 Ground: Clay
| Challenger Sibiu - Herredouble | 2021/09/30 08:00 | Dancu/Gima v Apostol/Frunza | 7-6,2-6,10-7 |
| Challenger Sibiu - Herredouble | 2021/09/30 09:35 | Palosi/Popescu v Erler/Miedler | 0-6,3-6 |
| Challenger București - Herredouble | 2021/09/23 14:10 | Jecan/Tomescu v Erler/Miedler | 0-6,6-4,11-9 |
| Challenger București - Herredouble | 2021/09/21 11:55 | Bonadio/Travaglia v Erler/Miedler | 3-6,3-6 |
| Challenger Tulln - Herredouble | 2021/09/07 12:15 | Erler/Miedler v Haerteis/Hassan | 3-6,6-2,9-11 |
| Challenger Como Herredouble | 2021/09/03 09:00 | Matos/M R Alves v Erler/Miedler | 7-5,6-2 |
| Challenger Como Herredouble | 2021/09/02 10:40 | Bortolotti/Cuevas v Erler/Miedler | 6-4,4-6,4-10 |
| Challenger Como Herredouble | 2021/09/01 09:25 | Baldi/Ocleppo v Erler/Miedler | 2-6,3-6 |
| Challenger Warszawa - Herredouble | 2021/08/27 16:20 | Lenz/Verbeek v Erler/Miedler | 6-7,6-2,10-5 |