Stadium: Stadium 2 Round: 26 Ground: Hardcourt outdoor
| Challenger Luedenscheid MD | 2021/08/18 12:35 | Moeller/Sandkaulen v Sancic/Sitak | 6-1,6-2 |
| Challenger Meerbusch MD | 2021/08/13 15:00 | Sancic/Sitak v Brown/Haase | 4-6,4-6 |
| Challenger Meerbusch MD | 2021/08/12 11:50 | Molchanov/Nedovyesov v Sancic/Sitak | 6-7,5-7 |
| Challenger Meerbusch MD | 2021/08/10 09:30 | Sancic/Sitak v Fallert/Haerteis | 7-5,6-4 |