Stadium: Court 3 Round: 54 Ground: Clay
| UTR Pro Tennis Series Barcelona | 2021/08/07 15:00 | Nicolas Bianchi v Alejandro Mendoza | 6-3,6-1 |
| UTR Pro Tennis Series Barcelona | 2021/08/06 08:30 | Jordi Munoz-Abreu v Alejandro Mendoza | 4-6,3-6 |
| UTR Pro Tennis Series Barcelona | 2021/08/05 07:00 | Francois Musitelli v Alejandro Mendoza | 6-3,5-2 |
| UTR Pro Tennis Series Barcelona | 2021/08/03 11:30 | Jaume Pla Malfeito v Alejandro Mendoza | 7-6,2-6,6-7 |
| UTR Pro Tennis Series Barcelona | 2021/08/02 08:30 | Alejandro Mendoza v Adria Soriano Barrera | 3-6,2-6 |
| 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 Barcelona | 2021/08/09 07:00 | Pablo Carretero v Miguel Fernando Pereira | 6-7,6-1,6-0 |
| UTR Pro Tennis Series Barcelona | 2021/08/08 10:00 | Nicolas Bianchi v Pablo Carretero | 6-1,0-6,6-1 |
| UTR Pro Tennis Series Barcelona | 2021/08/07 13:00 | Daniel Sancho Arbizu v Pablo Carretero | 3-6,6-3,4-6 |
| UTR Pro Tennis Series Barcelona | 2021/08/06 11:30 | Federico Zeballos v Pablo Carretero | 6-0,6-1 |
| UTR Pro Tennis Series Barcelona | 2021/08/05 10:00 | Marat Deviatiarov v Pablo Carretero | 6-0,6-1 |
| UTR Pro Tennis Series Barcelona | 2021/08/03 08:30 | Jay Friend v Pablo Carretero | 6-4,5-7,0-5 |
| UTR Pro Tennis Series Barcelona | 2021/08/02 10:00 | Pablo Carretero v Angel G Melgar | 7-6,6-3 |
| ITF M25 Vale Do Lobo | 2021/03/08 13:00 | Axel Garcian v Pablo Carretero | 6-7,6-3,12-10 |