Stadium: Bernard Frances Round: 29 Ground: Hardcourt outdoor
| ITF M15 Marbella | 2021/05/29 10:35 | Roman Andres Burruchaga v Diego F Flores | 4-6,6-3,3-6 |
| ITF M15 Marbella | 2021/05/28 09:45 | Antoine Bellier v Diego F Flores | 6-7,3-6 |
| ITF M15 Marbella | 2021/05/27 07:30 | Fouad Behbehani v Diego F Flores | 0-6,0-6 |
| ITF M15 Marbella | 2021/05/26 07:30 | Diego F Flores v Mateus Alves | 7-6,7-6 |
| ITF M15 Marbella | 2021/05/25 07:30 | Diego F Flores v Jose Joaquin M Cisneros | 6-2,6-4 |
| ITF M15 Marbella | 2021/05/24 08:00 | Diego F Flores v Jim Walder | 6-4,7-5 |
| ITF M15 Marbella | 2021/05/23 08:00 | Diego F Flores v Ignacio B Alia | 6-2,6-2 |
| ITF M25 Vic | 2021/05/17 08:00 | Laurent Lokoli v Diego F Flores | 7-6,7-6 |
| 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 |
| 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 |