Round: 44 Ground: Clay
| ITF M15 Prijedor | 2021/05/09 07:00 | Samuel M Arjona v Federico Campana | 2-6,3-6 |
| ITF M15 Las Palmas | 2021/04/25 09:00 | Nikita Alosha v Samuel M Arjona | 7-6,2-6,12-10 |
| ITF M25 Reus | 2021/04/11 10:00 | Alexander Weis v Samuel M Arjona | 7-6,5-7,10-4 |
| ITF M25 La Nucia | 2021/03/14 13:00 | Samuel M Arjona v Jesus Echevarri | 6-7,6-2,7-10 |
| ITF M15 La Nucia | 2021/03/09 09:00 | Samuel M Arjona v Simon Beaupain | 1-6,2-6 |
| ITF M15 La Nucia | 2021/03/08 09:00 | Egill Sigurdsson v Samuel M Arjona | 2-6,3-6 |
| ITF M25 Murcia | 2020/03/02 15:30 | Oleg Prihodko v Samuel M Arjona | 7-5,7-6 |
| ITF M25 Murcia | 2020/03/01 09:00 | Areg Stepanian v Samuel M Arjona | 3-6,1-6 |