Stadium: Court 7 Round: 26 Ground: Clay
| ITF Peru F1 | 2018/09/25 15:00 | Arreche, Nicolas Alberto v Gimenez, J. | 6-3,6-1 |
| ITF Argentina F6 | 2018/09/18 18:25 | Galarza, Juan Ignacio v Arreche, Nicolas Alberto | 6-3,6-3 |
| ITF Spain F21 | 2018/08/03 16:25 | Arreche, Nicolas Alberto v Giner, Marc | 5-7,2-6 |
| ITF Spain F21 | 2018/08/02 16:15 | Arreche, Nicolas Alberto v Sebastian Baez | 6-4,6-2 |
| ITF Belgium F5 | 2018/07/25 08:00 | Arreche, Nicolas Alberto v Prevosto, Luca | 4-6,6-3,6-7 |
| ITF Belgium F5 | 2018/07/24 08:00 | Arreche, Nicolas Alberto v Peters, Flemming | 4-6,6-2,6-2 |
| ITF Georgia F2 | 2018/07/19 06:00 | Arreche, Nicolas Alberto v Dubrivnyy, Artem | 6-7,4-6 |
| ITF Georgia F2 | 2018/07/18 06:00 | Arreche, Nicolas Alberto v Alekseenko, Vadim | 6-4,6-2 |
| ITF Peru F1 | 2018/09/25 15:00 | Ku Meza, Andre v Postay, Alan | 6-3,1-6,6-7 |
| ITF Peru F1 | 2018/09/23 15:30 | Postay, Alan v Ferreira, Joao (Por) | 4-6,3-6 |
| ITF Peru F1 | 2018/09/22 14:30 | Kohl, Cristopher v Postay, Alan | 1-6,1-6 |
| ITF Argentina F6 | 2018/09/17 13:00 | Andres Gabriel Ciurletti v Postay, Alan | 6-2,6-3 |
| ITF Argentina F6 | 2018/09/16 15:15 | Aranguren, Francisco v Postay, Alan | 2-6,2-6 |
| ITF Argentina F6 | 2018/09/15 14:00 | Postay, Alan v Makiguchi, Ryusei | 6-1,7-6 |
| ITF Argentina F5 | 2018/09/10 12:00 | Gimenez, J. v Postay, Alan | 6-4,7-5 |
| ITF Argentina F4 | 2018/09/03 12:00 | Galdon, Mateo v Postay, Alan | 6-4,7-5 |