Stadium: Court 4 Round: 62 Ground: Clay
| ITF Argentina F4 | 2018/09/02 13:00 | Galdon, Mateo v Ortiz, Oscar Gabriel | 6-3,6-1 |
| ITF Argentina F4 | 2018/09/01 12:00 | Fermin Tenti v Galdon, Mateo | 6-7,6-2,3-6 |
| ITF France F8 Qual | 2018/04/21 12:15 | Galdon, Mateo v Ugo Blanchet | 6-4,3-6,6-7 |
| ITF Argentina F9 | 2017/11/12 15:00 | Bacella, Nicolas v Galdon, Mateo | 5-7,6-3,6-4 |
| ITF Argentina F9 | 2017/11/11 14:00 | Castares, Marcos v Galdon, Mateo | 3-6,2-6 |
| ITF Argentina F4 | 2017/08/20 13:00 | Suarez Gonzalez, Agustin v Galdon, Mateo | 6-2,2-6,6-2 |
| ITF Argentina F4 | 2017/08/19 16:30 | Galdon, Mateo v Erhardt, Gaston | 6-4,7-5 |
| ITF France F9 Qual | 2017/04/23 09:00 | Galdon, Mateo v Damiens, Antoine | 3-6,6-3,2-6 |
| ITF Argentina F4 | 2018/09/02 13:00 | Ambrosio, Benjamin L v Postay, Alan | 6-2,0-6,4-6 |
| ITF Argentina F4 | 2018/09/01 12:00 | Lema, Nicolas Agustin v Postay, Alan | 4-6,2-6 |
| ITF Ecuador F2 Qual | 2018/07/30 15:00 | Postay, Alan v Gimenez, J. | 4-6,3-6 |
| ITF Ecuador F2 Qual | 2018/07/29 15:00 | Yaguar Espinoza, Gabriel Andres v Postay, Alan | 4-6,6-2,6-7 |
| ITF Ecuador F1 | 2018/07/24 19:45 | Postay, Alan v Estevez Maximiliano | 3-6,2-6 |
| Ecuador F1, Singles Qualifying | 2018/07/23 16:00 | Postay, Alan v Moreano Chan, Raul | 6-1,6-0 |
| 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 |