Stadium: Court 3 Round: 44 Ground: Hardcourt outdoor
| Ecuador F1, Singles Qualifying | 2018/07/22 15:00 | Abarzua, Garizon v Postay, Alan | 2-6,2-6 |
| Ecuador F1, Singles Qualifying | 2018/07/21 16:00 | Postay, Alan v Gimenez, J. | 7-6,6-4 |
| ITF Argentina F3 | 2018/05/27 12:30 | Francisco Comesana v Postay, Alan | 1-6,6-2,7-5 |
| ITF Argentina F2 | 2018/05/19 14:30 | Postay, Alan v Mariano Navone | 5-7,7-6,4-6 |
| ITF Argentina F1 | 2018/05/15 17:05 | Ortiz, Daniel Alejandro v Postay, Alan | 5-7,7-5,6-3 |
| ITF Argentina F1 | 2018/05/14 12:00 | Postay, Alan v Julian Cundom | 6-1,6-0 |
| ITF Argentina F1 | 2018/05/13 14:30 | Postay, Alan v Matias Riva | 6-3,6-0 |
| ITF Argentina F10 | 2017/11/18 12:00 | Postay, Alan v Lautaro Agustin Falabella | 3-6,6-4,3-6 |