Stadium: Pista 2 Round: 25 Ground: Hardcourt outdoor
| Challenger Salinas 2 | 2021/04/29 15:00 | Nicolas Mejia v Skander Mansouri | 3-6,6-3,6-2 |
| Challenger Salinas 2 | 2021/04/27 20:00 | Skander Mansouri v Joao Menezes | 6-7,6-4,7-6 |
| Challenger Salinas | 2021/04/20 14:30 | Skander Mansouri v Mohamed Aziz Dougaz | 2-6,2-6 |
| Challenger Zadar | 2021/03/22 11:15 | Nikolas Sanchez Izquierdo v Skander Mansouri | 6-2,6-1 |
| Challenger Zadar | 2021/03/21 11:05 | Duje Kekez v Skander Mansouri | 6-7,4-6 |
| Challenger St. Petersburg | 2021/03/01 08:30 | Artem Dubrivnyy v Skander Mansouri | 4-6,7-6,6-0 |
| Challenger St. Petersburg | 2021/02/28 09:10 | Daniil Glinka v Skander Mansouri | 6-3,6-7,5-7 |
| ITF M15 Monastir | 2021/02/17 10:00 | Skander Mansouri v Giovanni Mpetshi Perricard | 6-3,6-3 |
| Challenger Heilbronn | 2021/05/09 10:00 | Altug Celikbilek v Maxime Janvier | 3-6,4-6 |
| Challenger Salinas 2 | 2021/04/28 15:00 | Altug Celikbilek v Thiago Agustin Tirante | 2-6,4-6 |
| Challenger Salinas | 2021/04/26 14:30 | Altug Celikbilek v Nicolas Mejia | 3-6,5-7 |
| Challenger Salinas | 2021/04/23 15:00 | Tim Van Rijthoven v Altug Celikbilek | 3-6,6-2,6-7 |
| Challenger Salinas | 2021/04/22 15:00 | Roberto Ortega-Olmedo v Altug Celikbilek | 6-1,4-6,4-6 |
| Challenger Salinas | 2021/04/20 17:15 | JC Aragone v Altug Celikbilek | 2-6,6-7 |
| Challenger Orlando | 2021/04/14 18:15 | Jenson Brooksby v Altug Celikbilek | 6-3,6-1 |
| Challenger Orlando | 2021/04/13 16:05 | Thai-Son Kwiatkowski v Altug Celikbilek | 2-6,3-6 |