Stadium: Court 2 Round: 26 Ground: Hardcourt outdoor
| Challenger - Helsingfors - Herrdubbel | 2021/11/20 10:00 | Heliovaara/Rojer v Erler/Miedler | 3-6,6-7 |
| Challenger - Helsingfors - Herrdubbel | 2021/11/19 12:25 | Erler/Miedler v Virtanen/Zopp | 7-6,6-4 |
| Challenger - Helsingfors - Herrdubbel | 2021/11/18 16:00 | Fayziev/Kalovelonis v Erler/Miedler | 3-6,6-7 |
| Challenger - Helsingfors - Herrdubbel | 2021/11/17 19:00 | Erler/Miedler v Martos Gornes/Ramanathan | 7-5,6-3 |
| Challenger Ortisei - Herrdubbel | 2021/11/13 13:05 | Erler/Miedler v Sancic/Weissborn | 6-7,6-4,8-10 |
| Challenger Ortisei - Herrdubbel | 2021/11/12 13:00 | Sabanov/Sabanov v Erler/Miedler | 5-7,3-6 |
| Challenger Ortisei - Herrdubbel | 2021/11/11 14:40 | Erler/Miedler v Forti/Gaio | 6-2,7-6 |
| Challenger Ortisei - Herrdubbel | 2021/11/10 18:00 | Erler/Miedler v Prinoth/Weis | 6-3,6-2 |
| Challenger Meerbusch MD | 2021/08/12 11:30 | Ajdukovic/Fatic v De Jong/Stevens | 0-6,2-6 |
| Challenger Meerbusch MD | 2021/08/11 15:30 | Ajdukovic/Fatic v Merino/Mochizuki | 6-4,6-1 |
| Challenger Iasi - Herrdubbel | 2021/07/15 14:05 | Luz/M R Alves v Ajdukovic/Fatic | 6-2,6-4 |
| Challenger Iasi - Herrdubbel | 2021/07/14 08:00 | Coman/Dancu v Ajdukovic/Fatic | 1-6,6-7 |
| Challenger Forli - Herrdubbel | 2021/06/15 15:50 | Ajdukovic/Fatic v Fanselow/Gerch | 1-6,6-3,2-10 |