Round: 62 Ground: Clay
| ITF Spain F20 Qual | 2018/07/21 11:00 | Samuel M Arjona v Eduard Guell Bartrina | 3-6,1-6 |
| ITF Spain F19 | 2018/07/17 14:00 | Diego Hidalgo v Samuel M Arjona | 6-1,6-0 |
| ITF Spain F11 | 2018/05/12 11:30 | Adria Alvarez v Samuel M Arjona | 6-2,6-2 |
| ITF Spain F7 | 2018/03/17 09:30 | Pol Martin Tiffon v Samuel M Arjona | 3-6,6-1,6-3 |
| ITF Spain F7 | 2018/03/16 08:00 | Adria Alvarez v Samuel M Arjona | 3-6,4-6 |
| ITF Spain F6 Qual | 2018/03/11 09:00 | Pasquale De Giorgio v Samuel M Arjona | 6-1,3-6,6-1 |
| ITF Spain F6 Qual | 2018/03/10 09:15 | Samuel M Arjona v Igor Banicevic | 6-2,6-0 |
| ITF Spain F33 | 2017/10/07 09:00 | Alex M Pujolras v Samuel M Arjona | 6-0,6-4 |
| ITF Spain F20 Qual | 2018/07/21 09:30 | Gianni Ross v Jaime Caldes | 6-4,6-3 |
| ITF Spain F5 Qual | 2017/02/11 13:30 | Bruno Mardones v Jaime Caldes | 7-6,7-6 |
| ITF Spain F5 Qual | 2016/02/20 12:30 | Jaime Caldes v Raul Brancaccio | 3-6,1-6 |
| ITF Spain F4 | 2016/02/13 13:00 | Mircea-Alexandru Jecan v Jaime Caldes | 6-3,6-2 |