Stadium: Campo 6 Round: 26 Ground: Clay
| Challenger Oeiras - Herrdubbel | 2021/04/11 14:30 | Borges/Cabral v Kotov/Tseng | 6-1,6-2 |
| Challenger Oeiras - Herrdubbel | 2021/04/09 10:00 | Escobedo/Miedler v Kotov/Tseng | 6-4,2-6,6-10 |
| Challenger Oeiras - Herrdubbel | 2021/04/08 14:50 | Kotov/Tseng v Bourchier/Galdos | 6-4,6-4 |
| Challenger Oeiras - Herrdubbel | 2021/04/07 10:00 | Faria/Torres v Kotov/Tseng | 2-6,4-6 |
| Challenger San Marino - Herrdubbel | 2021/08/13 14:30 | Kolar/Martinez v Doumbia/Reboul | 7-6,6-4 |
| Challenger San Marino - Herrdubbel | 2021/08/12 17:00 | Doumbia/Reboul v Arneodo/Ocleppo | 6-4,7-6 |
| Challenger San Marino - Herrdubbel | 2021/08/11 16:00 | Doumbia/Reboul v Janvier/Martineau | 7-6,6-3 |
| Challenger Lexington - Herrdubbel | 2021/07/28 20:00 | Doumbia/Reboul v Polansky/Schnur | 6-2,6-7,6-10 |
| ATP Los Cabos - Herrdubbel | 2021/07/21 01:45 | Huey/Johnson v Doumbia/Reboul | 7-6,6-7,11-9 |
| ATP Newport - Herrdubbel | 2021/07/14 19:00 | Sousa/Thompson v Doumbia/Reboul | 6-4,6-2 |
| Challenger Salzburg - Herrdubbel | 2021/07/08 15:00 | Erler/Neuchrist v Doumbia/Reboul | 6-4,6-4 |
| Challenger Salzburg - Herrdubbel | 2021/07/07 10:00 | Cornea/Merino v Doumbia/Reboul | 3-6,6-4,2-10 |