Stadium: Court 6 Round: 44 Ground: Clay
| ITF Argentina F9 | 2018/11/13 12:30 | Guido Ivan Justo v Oscar Gabriel Ortiz | 1-6,6-3,6-4 |
| ITF Chile F3 | 2018/11/25 15:30 | Guido Ivan Justo v Miguel Angel Cabrera | 6-2,6-2 |
| ITF Chile F2 | 2018/11/18 16:00 | Guido Ivan Justo v Cristopher Kohl | 6-3,4-6,3-6 |
| ITF Argentina F9 | 2018/11/15 14:00 | Guido Ivan Justo v Juan Pablo Paz | 2-6,2-6 |
| ITF Argentina F9 | 2018/11/13 12:30 | Guido Ivan Justo v Oscar Gabriel Ortiz | 1-6,6-3,6-4 |
| ITF Argentina F8 | 2018/11/05 13:00 | Agustin Velotti v Guido Ivan Justo | 6-3,6-1 |
| ITF Argentina F7 | 2018/11/02 14:00 | Conner Huertas Del Pino v Guido Ivan Justo | 6-3,3-6,7-5 |
| ITF Argentina F7 | 2018/10/31 19:00 | Juan Manuel Cerundolo v Guido Ivan Justo | 3-6,6-1,3-6 |
| ITF Argentina F7 | 2018/10/29 17:00 | Guido Ivan Justo v Nicolas Alberto Arreche | 0-6,6-4,6-0 |
| ITF Chile F3 | 2018/11/25 15:30 | Oscar Gabriel Ortiz v Cristopher Kohl | 6-4,7-5 |
| ITF Chile F3 | 2018/11/24 15:00 | Oscar Gabriel Ortiz v Oscar Matias Leiva Biason | 6-2,6-4 |
| ITF Chile F2 | 2018/11/18 16:00 | Oscar Gabriel Ortiz v Rodrigo Echavarria | 4-6,3-6 |
| ITF Chile F2 | 2018/11/17 16:00 | Oscar Gabriel Ortiz v Karl W W Mac-Leay | 6-1,6-3 |
| ITF Argentina F9 | 2018/11/13 12:30 | Guido Ivan Justo v Oscar Gabriel Ortiz | 1-6,6-3,6-4 |
| ITF Argentina F8 | 2018/11/04 13:00 | Oscar Gabriel Ortiz v Santiago Besada | 2-6,1-6 |
| ITF Argentina F8 | 2018/11/03 13:00 | Aliaksandr Bulitski v Oscar Gabriel Ortiz | 6-2,1-6,3-6 |
| ITF Argentina F7 | 2018/10/30 17:00 | Oscar Gabriel Ortiz v Juan Manuel Cerundolo | 6-3,2-6,1-6 |