Round: 28 Ground: Hardcourt outdoor
| Challenger de Pozoblanco - Dobles Masculinos | 2021/07/22 19:45 | Andreev/Jianu v Sijsling/Van Rijthoven | 4-6,2-6 |
| Challenger de Pozoblanco - Dobles Masculinos | 2021/07/21 21:20 | Gabashvili/Kadhe v Barrientos/Ortega-Olmedo | 1-6,6-1,10-3 |
| Challenger de Braunschweig - Dobles Masculinos | 2021/07/06 17:10 | Gabashvili/Kadhe v Sijsling/Smits | 4-6,5-7 |