Stadium: Cancha 1 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 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 |
| ITF Argentina F7 | 2018/10/29 17:30 | Oscar Gabriel Ortiz v Ramiro Pioli Tizon | 1-6,6-4,6-1 |
| ITF Argentina F7 | 2018/10/28 15:30 | Francisco Comesana v Oscar Gabriel Ortiz | 4-6,3-6 |
| ITF Argentina F6 | 2018/09/18 13:00 | Oscar Gabriel Ortiz v Camilo Ugo Carabelli | 2-6,4-6 |
| ITF Argentina F5 | 2018/09/09 12:00 | Nicolas Ferrando v Oscar Gabriel Ortiz | 6-1,6-4 |
| ITF Chile F1 | 2018/11/13 16:00 | Nicolas Acevedo v Karl W W Mac-Leay | 6-2,6-2 |
| ITF Chile F1 | 2018/11/12 13:00 | Karl W W Mac-Leay v Lucas C R Crichigno | 6-4,3-6,6-1 |
| ITF Brazil F7 | 2018/10/27 12:00 | Matheus P De Almeida v Karl W W Mac-Leay | 6-2,6-1 |
| ITF Brazil F6 | 2018/10/21 15:30 | Karl W W Mac-Leay v Javier Naser | 7-6,3-6,0-6 |
| ITF Brazil F6 | 2018/10/20 15:30 | Gabriel P Tumasonis v Karl W W Mac-Leay | 3-6,3-6 |
| ITF Peru F2 | 2018/09/29 14:30 | Juan Manuel Lopez v Karl W W Mac-Leay | 2-6,7-6,6-1 |
| ITF Belgium F8 | 2018/08/11 08:00 | Karl W W Mac-Leay v Martin Van Der Meerschen | 2-6,2-6 |
| ITF Belgium F7 Qual | 2018/08/05 08:00 | Karl W W Mac-Leay v Floris Van Den Brink | 1-6,0-6 |