Stadium: Court 1 Round: 25 Ground: Clay
| ITF Dominican Republic F2 | 2018/12/04 17:25 | Mendoza, Alejandro v Nick Hardt | 1-6,1-6 |
| ITF Dominican Republic F1 | 2018/11/26 14:30 | Oscar Jose Gutierrez v Mendoza, Alejandro | 6-3,6-2 |
| ITF Argentina F9 | 2018/11/12 17:00 | Besada, Santiago v Mendoza, Alejandro | 6-3,6-3 |
| ITF Argentina F8 | 2018/11/05 13:00 | Mendoza, Alejandro v Santiago Rodriguez Taverna | 3-6,1-6 |
| ITF Argentina F7 | 2018/10/29 17:00 | Mendoza, Alejandro v Conner Huertas Del Pino | 3-6,2-6 |
| ITF Peru F3 | 2018/10/08 19:20 | Mendoza, Alejandro v Enrique Bogo | 6-7,2-6 |
| ITF Peru F3 | 2018/10/07 16:00 | Mendoza, Alejandro v Lima, Enrico Dos Santos | 6-4,6-1 |
| ITF Peru F3 | 2018/10/06 14:00 | Mendoza, Alejandro v Pioli Tizon, Ramiro | 6-1,6-4 |
| ITF Dominican Republic F2 | 2018/12/04 14:00 | Montero, Jorge v Fermin Tenti | 2-6,7-5,2-6 |
| ITF Chile F3 | 2018/11/28 14:00 | Montero, Jorge v Pena Lopez, Manuel | 4-6,0-6 |
| ITF Chile F3 | 2018/11/26 17:35 | Nicolas Bruna v Montero, Jorge | 4-6,4-6 |
| ITF Chile F2 | 2018/11/21 16:00 | Montero, Jorge v Zukas, Matias | 1-6,1-6 |
| ITF Chile F2 | 2018/11/19 16:30 | Castro, Cristobal v Montero, Jorge | 4-6,2-6 |
| ITF Chile F1 | 2018/11/14 19:35 | Montero, Jorge v Martinez, Mirko | 4-6,6-7 |
| Challenger Campinas | 2018/09/30 15:30 | Montero, Jorge v Miele, Andre | 4-6,6-3,3-6 |
| ITF Spain F28 | 2018/09/18 11:00 | Montero, Jorge v Pol Martin Tiffon | 3-6,6-3,2-6 |