Stadium: Central bis Round: 26 Ground: Hardcourt outdoor
| ITF - M25 Ajaccio | 2021/07/07 08:30 | Loris Pourroy v Kenny de Schepper | 4-6,6-4,6-2 |
| ITF - M25 Ajaccio | 2021/07/05 08:30 | Loris Pourroy v Alessio Tramontin | 6-1,6-3 |
| ITF - M25 Montauban | 2021/06/23 08:25 | Loris Pourroy v Dayne Kelly | 4-6,4-6 |
| ITF - M25 Montauban | 2021/06/21 13:00 | Loris Pourroy v Alexandre Aubriot | 7-5,6-1 |
| ITF - M25 Montauban | 2021/06/21 09:15 | Loris Pourroy v Julien De Cuyper | 6-0,6-4 |
| ITF - M25 Grasse | 2021/06/13 07:30 | Loris Pourroy v Edoardo Graziani | 4-6,4-6 |
| ITF - M15 Monastir | 2020/12/17 12:00 | Artem Dubrivnyy v Loris Pourroy | 6-1,6-2 |
| ITF - M15 Monastir | 2020/12/16 09:20 | Terence Atmane v Loris Pourroy | 2-6,6-1,3-6 |
| ITF - M25 Ajaccio | 2021/07/07 10:00 | Pierre Antoine Tailleu v Yannick Mertens | 4-6,4-6 |
| ITF - M25 Bakio | 2021/06/29 15:20 | Yannick Mertens v Christian Harrison | 2-6,6-3,4-6 |
| ITF - M15 Marbella | 2021/05/30 09:00 | Diego F Flores v Yannick Mertens | 2-6,1-6 |
| ITF - M15 Marbella | 2021/05/29 07:55 | Yannick Mertens v Nicolas Alvarez Varona | 1-6,7-5,6-3 |
| ITF - M15 Marbella | 2021/05/28 10:25 | Alejandro Moro Canas v Yannick Mertens | 4-6,5-7 |
| ITF - M15 Marbella | 2021/05/27 09:20 | Maxime Mora v Yannick Mertens | 5-7,0-6 |
| ITF - M15 Marbella | 2021/05/25 09:00 | Francisco Andreu Garcia v Yannick Mertens | 6-7,1-6 |
| ITF - M15 Troisdorf | 2021/05/14 11:00 | Yannick Mertens v Elmar Ejupovic | 2-6,1-6 |