Stadium: Cancha 1 Round: 19 Ground: Clay
| Challenger Pozoblanco | 2021/07/19 15:00 | Michael Geerts v Diego Hidalgo | 7-6,6-3 |
| Challenger Pozoblanco | 2021/07/18 17:45 | Carlos Matarredona Valor v Diego Hidalgo | 4-6,5-7 |
| Challenger Amersfoort | 2021/07/12 10:40 | Michael Geerts v Diego Hidalgo | 7-6,6-3 |
| Challenger Amersfoort | 2021/07/11 14:00 | Guy Den Ouden v Diego Hidalgo | 3-6,6-7 |
| Challenger Braunschweig | 2021/07/05 09:30 | Diego Hidalgo v Dayne Kelly | 3-6,7-6,3-6 |
| Challenger Braunschweig | 2021/07/04 10:10 | Igor Sijsling v Diego Hidalgo | 3-6,6-3,4-6 |
| ITF M25 Tulsa | 2021/06/17 14:00 | Nicolas Kicker v Diego Hidalgo | 6-4,7-5 |
| ITF M25 Tulsa | 2021/06/16 17:10 | Strong Kirchheimer v Diego Hidalgo | 7-6,2-6,3-6 |
| ITF M15 Cairo | 2021/08/04 10:00 | Oleksandr Ovcharenko v Mathieu Perchicot | 7-6,6-2 |
| ITF M15 Cairo | 2021/07/31 09:30 | Mathieu Perchicot v Alejo Lorenzo Lingua Lavallen | 1-6,4-6 |
| ITF M15 Cairo | 2021/07/30 10:30 | Mathieu Perchicot v Ignacio Monzon | 7-5,6-2 |
| ITF M15 Cairo | 2021/07/29 08:00 | Mathieu Perchicot v Lukas Krainer | 7-6,5-7,6-1 |
| ITF M15 Cairo | 2021/07/28 08:00 | Mathieu Perchicot v Oleksandr Ovcharenko | 6-3,1-6,6-2 |
| ITF M15 Cairo | 2021/07/25 08:00 | Mathieu Perchicot v Jose Fco. Vidal Azorin | 5-7,5-7 |
| ITF M15 Cairo | 2021/07/24 08:00 | Mathieu Perchicot v Kai Wehnelt | 6-3,1-6,7-5 |
| ITF M15 Cairo | 2021/07/23 08:00 | Mathieu Perchicot v Cezar Cretu | 6-3,6-1 |