Stadium: Court 5 Round: 44 Ground: Clay
| ITF M25 Santander | 2021/08/25 11:30 | Samuel M Arjona v Miguel Damas | 1-6,4-6 |
| ITF M25 Santander | 2021/08/23 09:00 | Alejandro Mendoza v Samuel M Arjona | 6-4,3-6,9-11 |
| ITF M25 Santander | 2021/08/22 09:00 | Samuel M Arjona v Patrick Foley | 6-4,7-6 |
| ITF M15 Xativa | 2021/08/01 13:00 | Inaki Montes-De La Torre v Samuel M Arjona | 6-2,6-2 |
| ITF M25 Denia | 2021/07/25 08:00 | Vicente O Moratalla v Samuel M Arjona | 6-0,6-0 |
| ITF M25 Gandia | 2021/07/20 14:30 | Daniel Merida Aguilar v Samuel M Arjona | 6-3,6-1 |
| ITF M15 Sarajevo | 2021/05/30 12:00 | Samuel M Arjona v Nemanja Malesevic | 3-6,3-6 |
| ITF M25 Kiseljak | 2021/05/23 10:45 | Bozo Barun v Samuel M Arjona | 6-3,6-2 |
| ITF M25 Oviedo | 2021/08/29 07:50 | Daniel L Salmeron v Mikel Martinez | 4-6,3-6 |
| ITF M25 Vale Do Lobo | 2021/03/07 12:00 | Daniel L Salmeron v Kuzey Cekirge | 3-6,3-6 |
| ITF M15 Getafe Madrid | 2020/11/30 08:00 | Benjamin Pietri v Daniel L Salmeron | 6-7,6-2,10-7 |
| ITF M15 Getafe Madrid | 2020/11/29 13:00 | Daniel L Salmeron v Jesus Echevarri | 7-5,2-6,10-4 |