Stadium: Court 1 Round: 25 Ground: Clay
| ITF - Oldenzaal M15 | 2021/08/18 15:00 | Petros Tsitsipas v Gabriel Alejandro Hidalgo | 7-5,6-2 |
| ITF - Oldenzaal M15 | 2021/08/17 08:15 | Gabriel Alejandro Hidalgo v Felipe Derdoy | 6-2,6-1 |
| ITF - Oldenzaal M15 | 2021/08/15 12:00 | Gabriel Alejandro Hidalgo v Roland Stuurman | 6-2,2-6,10-4 |
| ITF - Wetzlar M25 | 2021/08/04 09:55 | Dayne Kelly v Gabriel Alejandro Hidalgo | 6-7,6-2,6-4 |
| ITF - Wetzlar M25 | 2021/08/03 08:55 | Gabriel Alejandro Hidalgo v Dominik Recek | 6-2,6-3 |
| ITF - Wetzlar M25 | 2021/08/02 09:30 | Gabriel Alejandro Hidalgo v Julien Penzlin | 6-1,7-5 |
| ITF - Esch/Alzette M15 | 2021/07/23 09:00 | Gabriel Alejandro Hidalgo v Nicholas David Ionel | 4-6,0-6 |
| ITF - Esch/Alzette M15 | 2021/07/22 10:00 | Gabriel Alejandro Hidalgo v Alexander Weis | 6-2,6-7,7-5 |
| ITF - Villa Maria M15 | 2021/03/28 16:00 | Nicolas Bianchi v Luciano Emanuel Ambrogi | 6-2,2-6,10-5 |