Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| Challenger Poznan | 2021/07/25 10:30 | Sebastian Fanselow v Lucas Gerch | 2-6,5-7 |
| ITF M25 Bourg-en-Bresse | 2021/06/29 13:00 | Viktor Durasovic v Sebastian Fanselow | 1-6,7-6,6-2 |
| Challenger Milan | 2021/06/20 13:15 | Sebastian Fanselow v Camilo Ugo Carabelli | 6-3,2-6,2-6 |
| Challenger Forli | 2021/06/15 09:30 | Sebastian Fanselow v Camilo Ugo Carabelli | 2-6,2-6 |
| Challenger Forli | 2021/06/14 09:30 | Sebastian Fanselow v Luca Vanni | 2-6,6-2,7-5 |
| Challenger Forli | 2021/06/13 12:20 | Sebastian Fanselow v Antoine Bellier | 6-3,6-4 |
| Challenger Orlando | 2021/06/06 14:00 | Thiago Agustin Tirante v Sebastian Fanselow | 6-2,3-6,6-4 |
| Challenger Little Rock | 2021/05/31 15:00 | Alexis Galarneau v Sebastian Fanselow | 3-6,6-3,6-4 |
| ITF M15 Monastir | 2021/07/26 14:00 | Michael Zhu v Mehdi Sadaoui | 6-4,7-5 |
| ITF M15 Monastir | 2021/07/26 08:00 | Mehdi Sadaoui v Credit Chaiyarin | 6-2,6-4 |
| ITF M15 Monastir | 2021/07/22 14:00 | Maxence Beauge v Mehdi Sadaoui | 7-6,6-2 |
| ITF M15 Monastir | 2021/07/20 10:10 | Mehdi Sadaoui v Matthew Dellavedova | 7-5,7-5 |
| ITF M15 Sibenik | 2021/05/16 10:00 | Rimpei Kawakami v Mehdi Sadaoui | 6-7,6-1,10-3 |
| ITF M15 Las Palmas | 2021/04/26 09:30 | Lilian Marmousez v Mehdi Sadaoui | 7-5,7-5 |
| ITF M15 Las Palmas | 2021/04/25 08:00 | Mehdi Sadaoui v Adrien Gobat | 3-6,7-6,13-11 |
| ITF M15 Sibenik | 2021/04/20 09:25 | Ugo Blanchet v Mehdi Sadaoui | 6-1,6-4 |