Stadium: Campo Fabrizio Gasparini Round: 26 Ground: Clay
| Challenger Tulln MD | 2021/09/11 09:00 | Brown/Vavassori v Matos/M R Alves | 7-6,6-1 |
| Challenger Tulln MD | 2021/09/10 10:00 | Goransson/Lammons v Brown/Vavassori | 3-6,2-6 |
| Challenger Tulln MD | 2021/09/09 15:15 | Brown/Vavassori v Blancaneaux/Janvier | 6-4,6-2 |
| Challenger Tulln MD | 2021/09/08 15:00 | Brown/Vavassori v Melzer/Melzer | 7-5,6-2 |
| Challenger Sibiu MD | 2021/10/01 14:15 | Cornea/Tsitsipas v Blancaneaux/Kadhe | 5-7,2-6 |
| Challenger Biel MD | 2021/09/21 14:45 | Bemelmans/Masur v Cornea/Tsitsipas | 6-4,3-6,13-11 |
| Challenger Cassis MD | 2021/09/09 10:35 | Cornea/Tsitsipas v Matsui/Uesugi | 7-5,4-6,8-10 |
| Challenger Cassis MD | 2021/09/08 09:45 | Cornea/Tsitsipas v Aragone/Barrientos | 6-4,7-6 |
| Challenger Saint-Tropez MD | 2021/09/01 09:00 | Vance/Whiting v Cornea/Tsitsipas | 6-3,3-6,12-10 |
| Challenger Prague MD | 2021/08/28 14:30 | Krumich/Paulson v Cornea/Tsitsipas | 3-6,6-3,8-10 |
| Challenger Prague MD | 2021/08/26 14:10 | Geerts/Peniston v Cornea/Tsitsipas | 3-6,6-3,12-14 |
| Challenger Prague MD | 2021/08/24 11:45 | Jenicek/Kodat v Cornea/Tsitsipas | 4-6,5-7 |