Stadion: Court 1 Round: 28 Ground: Clay
| Challenger - Banja Luka - Herrendoppel | 2021/09/09 11:00 | Sabanov/Sabanov v Jecan/Tomescu | 6-3,6-3 |
| Challenger - Banja Luka - Herrendoppel | 2021/09/08 09:30 | Sabanov/Sabanov v Tadic/Topo | 6-2,6-2 |
| Challenger - Como - Herrendoppel | 2021/09/01 08:00 | Sabanov/Sabanov v Bortolotti/Cuevas | 7-5,2-6,7-10 |
| Challenger - Lüdenscheid - Herrendoppel | 2021/08/21 11:05 | Molchanov/Nedovyesov v Sabanov/Sabanov | 4-6,6-2,10-12 |
| Challenger - Lüdenscheid - Herrendoppel | 2021/08/20 16:40 | Sabanov/Sabanov v Verdugo/Reyes-Varela | 6-2,3-6,10-6 |
| Challenger - Lüdenscheid - Herrendoppel | 2021/08/19 13:20 | Cuevas/Mena v Sabanov/Sabanov | 4-6,2-6 |
| Challenger - Lüdenscheid - Herrendoppel | 2021/08/18 09:00 | Drzewiecki/Martos Gornes v Sabanov/Sabanov | 5-7,2-6 |
| Challenger - Meerbusch - Herrendoppel | 2021/08/12 10:00 | Walkow/Zielinski v Sabanov/Sabanov | 7-6,6-4 |
| Challenger - Banja Luka - Herrendoppel | 2021/09/09 15:40 | Kolar/Sachko v Bortolotti/Cuevas | 6-3,2-6,11-9 |