Stadium: Court 2 Round: 26 Ground: Grass
| Challenger Salzburg - HD | 2021/07/08 15:00 | Erler/Neuchrist v Doumbia/Reboul | 6-4,6-4 |
| Challenger Salzburg - HD | 2021/07/07 10:00 | Cornea/Merino v Doumbia/Reboul | 3-6,6-4,2-10 |
| Challenger - Porto - HD | 2021/07/01 14:55 | Doumbia/Reboul v Olivo/Reyes-Varela | 7-6,4-6,7-10 |
| Challenger Milan - HD | 2021/06/25 12:00 | Doumbia/Reboul v Kopriva/Lehecka | 5-7,3-6 |
| Challenger Milan - HD | 2021/06/24 10:00 | Passaro/Vanni v Doumbia/Reboul | 1-6,4-6 |
| Challenger Milan - HD | 2021/06/23 09:00 | Galdos/Luz v Doumbia/Reboul | 3-6,6-3,6-10 |
| Challenger - Aix-en-Provence - HD | 2021/06/19 15:45 | Doumbia/Reboul v Galloway/Lawson | 6-7,7-5,10-4 |
| Challenger - Aix-en-Provence - HD | 2021/06/18 15:40 | Walkow/Zielinski v Doumbia/Reboul | 6-7,4-6 |