Stadium: Court 8 Round: 28 Ground: Clay
| Challenger Bucharest MD | 2021/09/23 11:00 | Albot/Cozbinov v Gonzales/Johnson | 3-6,7-6,6-10 |
| Challenger Bucharest MD | 2021/09/22 09:45 | Ionel/Jianu v Gonzales/Johnson | 1-6,5-7 |
| Challenger Istanbul MD | 2021/09/17 11:15 | Sancic/Sitak v Gonzales/Johnson | 4-6,6-2,10-5 |
| Challenger Istanbul MD | 2021/09/16 15:15 | Gonzales/Johnson v Kirci/Setkic | 6-0,6-2 |
| Challenger Istanbul MD | 2021/09/15 12:05 | Gonzales/Johnson v Arnaboldi/Giustino | 6-4,6-3 |
| Challenger Kyiv MD | 2021/09/10 08:00 | Luz/Nedovyesov v Gonzales/Johnson | 6-4,6-4 |
| Challenger Kyiv MD | 2021/09/09 13:00 | Gonzales/Johnson v Gakhov/Rybakov | 6-2,7-6 |
| Challenger Kyiv MD | 2021/09/08 14:45 | Gonzales/Johnson v Clarke/Kirkin | 7-6,6-4 |
| Challenger Bucharest MD | 2021/09/23 14:10 | Jecan/Tomescu v Erler/Miedler | 0-6,6-4,11-9 |
| Challenger Bucharest MD | 2021/09/22 08:00 | Motti/Vatutin v Jecan/Tomescu | 6-4,6-7,3-10 |
| Challenger Banja Luka MD | 2021/09/09 11:00 | Sabanov/Sabanov v Jecan/Tomescu | 6-3,6-3 |
| Challenger Banja Luka MD | 2021/09/07 11:35 | Kirkov/Kuzmanov v Jecan/Tomescu | 7-6,4-6,8-10 |