Stadium: Center Round: 26 Ground: Hardcourt indoor
| Challenger Ismaning - Herrdubbel | 2021/10/28 14:00 | Gengel/Machac v Haase/Hermans | 7-6,6-2 |
| Challenger Ismaning - Herrdubbel | 2021/10/26 15:30 | Haase/Hermans v Celikbilek/Ilkel | 6-4,6-4 |
| Challenger Losinj - Herrdubbel | 2021/10/21 14:40 | Haase/Hermans v Sancic/Sitak | 5-7,4-6 |
| Challenger Losinj - Herrdubbel | 2021/10/20 08:00 | Haase/Hermans v Genov/Nokic | 6-4,6-4 |