Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| Challenger Warsaw | 2021/08/22 11:15 | Skander Mansouri v Jan Zielinski | 7-5,3-6,3-6 |
| Challenger Segovia | 2021/07/25 09:00 | Dalibor Svrcina v Skander Mansouri | 6-0,3-6,6-2 |
| Challenger Pozoblanco | 2021/07/19 17:55 | Skander Mansouri v Altug Celikbilek | 7-6,1-6,6-7 |
| Challenger Todi | 2021/07/12 16:30 | Skander Mansouri v Thiago Agustin Tirante | 3-6,2-6 |
| ITF M25 Belgrade | 2021/07/02 09:00 | Skander Mansouri v Nick Hardt | 3-6,0-6 |
| ITF M25 Belgrade | 2021/07/01 10:45 | Skander Mansouri v Mirko Martinez | 6-2,5-7,6-2 |
| ITF M25 Belgrade | 2021/06/29 10:40 | Skander Mansouri v Veljko Krstic | 7-6,7-5 |
| Challenger Prostejov | 2021/06/15 11:20 | Skander Mansouri v Tobias Kamke | 0-6,6-3,2-6 |
| ITF M15 Monastir | 2021/08/25 07:30 | Luciano Darderi v Mwendwa Mbithi | 6-4,6-1 |
| ITF M15 Monastir | 2021/08/17 07:30 | Mwendwa Mbithi v Gabriele Bosio | 2-6,5-7 |
| ITF M15 Monastir | 2021/08/16 07:30 | Mwendwa Mbithi v Alan F R Fierros | 6-7,6-4,10-6 |
| ITF M15 Monastir | 2021/08/15 08:30 | Mwendwa Mbithi v Matas Vasiliauskas | 7-5,6-3 |
| ITF M15 Monastir | 2021/08/08 07:30 | Mwendwa Mbithi v Takuya Kumasaka | 6-2,6-7,2-10 |
| ITF M25 Weston | 2021/06/29 21:00 | Mwendwa Mbithi v Ben Shelton | 4-6,6-7 |
| ITF M25 Pensacola | 2021/05/19 14:30 | Mwendwa Mbithi v Oliver Crawford | 5-7,4-6 |
| ITF M25 Naples | 2021/02/16 16:00 | Mwendwa Mbithi v Kiranpal Pannu | 4-6,3-6 |