Stadium: Cancha 1 Round: 25 Ground: Clay
| Challenger Buenos Aires | 2018/11/12 16:30 | Bastian Malla v Juan Ignacio Galarza | 6-4,2-6,6-2 |
| Challenger Montevideo | 2018/11/04 17:50 | Juan Ignacio Galarza v Bastian Malla | 2-6,7-6,6-1 |
| Challenger Buenos Aires | 2018/11/12 16:30 | Bastian Malla v Juan Ignacio Galarza | 6-4,2-6,6-2 |
| Challenger Buenos Aires | 2018/11/12 00:50 | Juan Ignacio Galarza v Camilo Ugo Carabelli | 7-5,6-1 |
| Challenger Buenos Aires | 2018/11/11 17:50 | Matias Zukas v Juan Ignacio Galarza | 6-7,7-5,4-6 |
| Challenger Montevideo | 2018/11/06 16:40 | Juan Ignacio Galarza v Guido Andreozzi | 6-1,5-7,3-6 |
| Challenger Montevideo | 2018/11/05 17:45 | Juan Ignacio Galarza v Ulises Blanch | 6-3,2-6,6-4 |
| Challenger Montevideo | 2018/11/04 17:50 | Juan Ignacio Galarza v Bastian Malla | 2-6,7-6,6-1 |
| Challenger Montevideo | 2018/11/03 18:05 | Miljan Zekic v Juan Ignacio Galarza | 5-7,7-5,4-6 |
| Challenger Guayaquil | 2018/10/27 18:40 | Juan Sebastian Gomez v Juan Ignacio Galarza | 6-4,6-1 |
| Challenger Buenos Aires | 2018/11/16 19:00 | Bastian Malla v Dimitar Kuzmanov | 4-6,2-6 |
| Challenger Buenos Aires | 2018/11/14 21:45 | Bastian Malla v Daniel Gimeno-Traver | 6-2,6-4 |
| Challenger Buenos Aires | 2018/11/13 22:50 | Guido Andreozzi v Bastian Malla | 6-7,4-6 |
| Challenger Buenos Aires | 2018/11/12 16:30 | Bastian Malla v Juan Ignacio Galarza | 6-4,2-6,6-2 |
| Challenger Buenos Aires | 2018/11/11 22:00 | Ulises Blanch v Bastian Malla | 3-6,4-6 |
| Challenger Buenos Aires | 2018/11/11 17:00 | Bastian Malla v Nicolas Alvarez | 1-6,7-5,6-0 |
| Challenger Montevideo | 2018/11/04 17:50 | Juan Ignacio Galarza v Bastian Malla | 2-6,7-6,6-1 |
| Challenger Montevideo | 2018/11/03 17:40 | Bastian Malla v Franco Agamenone | 7-5,6-3 |