Round: 25 Ground: Clay
| ITF Peru F1 | 2018/09/27 17:45 | Nicolas Alberto Arreche v Arklon H D Pino | 2-6,7-5,2-6 |
| ITF Peru F1 | 2018/09/26 16:20 | Nicolas Alberto Arreche v Alan Postay | 6-1,6-0 |
| ITF Peru F1 | 2018/09/25 15:00 | Nicolas Alberto Arreche v Julian Gimenez | 6-3,6-1 |
| ITF Argentina F6 | 2018/09/18 18:25 | Juan Ignacio Galarza v Nicolas Alberto Arreche | 6-3,6-3 |
| ITF Spain F21 | 2018/08/03 16:25 | Nicolas Alberto Arreche v Marc Giner | 5-7,2-6 |
| ITF Spain F21 | 2018/08/02 16:15 | Nicolas Alberto Arreche v Sebastian Baez | 6-4,6-2 |
| ITF Belgium F5 | 2018/07/25 08:00 | Nicolas Alberto Arreche v Luca Prevosto | 4-6,6-3,6-7 |
| ITF Belgium F5 | 2018/07/24 08:00 | Nicolas Alberto Arreche v Flemming Peters | 4-6,6-2,6-2 |