Stadium: Central Tag Heuer Round: 29 Ground: Hardcourt outdoor
| Challenger Saint-Tropez MD | 2021/09/03 10:00 | Arneodo/Guinard v Istomin/Safiullin | 7-5,7-6 |
| Challenger Saint-Tropez MD | 2021/09/02 10:00 | Arneodo/Guinard v Vance/Whiting | 6-4,6-4 |
| Challenger Saint-Tropez MD | 2021/09/04 14:45 | Grenier/Muller v Sancic/Sitak | 2-6,6-3,5-10 |
| Challenger Saint-Tropez MD | 2021/09/02 15:10 | Chazal/Tessa v Sancic/Sitak | 2-6,4-6 |
| Challenger Saint-Tropez MD | 2021/09/01 12:35 | Fabbiano/Masur v Sancic/Sitak | 6-7,2-6 |
| 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 |