| Challenger Segovia | 2021/07/25 15:20 | Carlos Gimeno Valero v Alejandro Mendoza | 6-1,6-1 |
| Challenger Pozoblanco | 2021/07/18 16:35 | Emilio Nava v Alejandro Mendoza | 6-2,6-3 |
| Challenger Todi | 2021/07/11 08:00 | Giovanni Fonio v Alejandro Mendoza | 6-1,6-1 |
| UTR Pro Tennis Series Copenhagen | 2021/06/16 08:00 | Alejandro Mendoza v Daniel De Jonge | 1-6,2-6 |
| UTR Pro Tennis Series Copenhagen | 2021/06/15 09:30 | Alejandro Mendoza v Oskar Brostrom Poulsen | 5-2 |
| UTR Pro Tennis Series California | 2021/02/27 17:30 | Alejandro Mendoza v Miles Jones | 4-6,1-6 |
| UTR Pro Tennis Series California | 2021/02/25 16:50 | Alejandro Mendoza v Ryan James Storrie | 1-6,1-6 |
| UTR Pro Tennis Series California | 2021/02/13 20:30 | Alejandro Mendoza v Karl Lee | 3-6,4-5 |
| ITF M25 Idanha-A-Nova | 2021/07/18 13:00 | John Echeverria v Adria Soriano Barrera | 7-6,7-5 |
| ITF M25 Idanha-A-Nova | 2021/07/13 08:00 | Alejandro Moro Canas v Adria Soriano Barrera | 7-6,7-5 |
| ITF M25 Idanha-A-Nova | 2021/07/12 08:00 | Adria Soriano Barrera v Goncalo Falcao | 7-5,7-5 |
| ITF M25 Idanha-A-Nova | 2021/07/11 08:00 | Adria Soriano Barrera v Pavel Motl | 7-6,6-0 |
| UTR Pro Tennis Series Barcelona | 2021/06/27 08:00 | Xavier Gabarro v Adria Soriano Barrera | 6-3,5-3 |
| UTR Pro Tennis Series Barcelona | 2021/06/26 12:00 | Constant De La Bassetiere v Adria Soriano Barrera | 6-2,3-6,1-6 |
| UTR Pro Tennis Series Barcelona | 2021/06/25 09:30 | Jay Friend v Adria Soriano Barrera | 3-6,6-2,2-5 |
| UTR Pro Tennis Series Barcelona | 2021/06/23 09:30 | Ervin H Eminefendic v Adria Soriano Barrera | 1-6,5-7 |