Stadium: Court 4 Round: 26 Ground: Hardcourt outdoor
| ITF M15 Marbella | 2021/05/26 11:10 | Maxime Mora v Xavi Matas Ortega | 6-7,6-4,6-4 |
| ITF M25 Vic | 2021/05/17 09:00 | Johan Nikles v Maxime Mora | 6-2,6-2 |
| UTR Pro Tennis Series Barcelona | 2021/05/02 12:00 | Yurii Dzhavakian v Maxime Mora | 5-7,3-6 |
| UTR Pro Tennis Series Barcelona | 2021/05/02 08:30 | Maxime Mora v Ivan Gakhov | 6-4,3-6,7-6 |
| UTR Pro Tennis Series Barcelona | 2021/04/30 12:30 | Jordi Mas De Ugarte v Maxime Mora | 6-2,6-3 |
| UTR Pro Tennis Series Barcelona | 2021/04/29 08:00 | Kuzey Cekirge v Maxime Mora | 4-6,6-3,5-7 |
| UTR Pro Tennis Series Barcelona | 2021/04/27 11:30 | Thomas Laurent v Maxime Mora | 6-1,6-2 |
| UTR Pro Tennis Series Barcelona | 2021/04/27 07:00 | Maxime Mora v Alexis Gautier | 6-2,5-2 |
| 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 |
| ITF M15 Troisdorf | 2021/05/13 09:00 | Yannick Mertens v Luke Johnson | 7-6,6-4 |
| ITF M15 Troisdorf | 2021/05/12 12:00 | Yannick Mertens v Max Wiskandt | 7-6,6-3 |
| ITF M15 Sibenik | 2021/04/21 12:05 | Gergely Madarasz v Yannick Mertens | 6-4,5-7,6-3 |
| ITF M25 Meerbusch | 2021/04/15 10:00 | Alexander Erler v Yannick Mertens | 6-3,3-6,6-1 |
| ITF M25 Meerbusch | 2021/04/13 13:30 | Yannick Mertens v Jeroen Vanneste | 6-3,6-4 |
| ITF M15 Monastir | 2021/03/11 08:30 | Yannick Mertens v Naoki Nakagawa | 6-4,3-6,4-6 |