Stadium: Cancha Central Round: 27 Ground: Clay
| Challenger Montevideo | 2018/11/08 20:40 | Pablo Andujar v Facundo Arguello | 6-7,5-7 |
| Challenger Montevideo | 2018/11/06 19:20 | Facundo Arguello v Arthur De Greef | 5-7,6-3,6-3 |
| Challenger Guayaquil | 2018/11/01 20:30 | Facundo Arguello v Pedro Sousa | 6-7,3-6 |
| Challenger Guayaquil | 2018/10/31 16:00 | Ulises Blanch v Facundo Arguello | 4-6,1-6 |
| Challenger Guayaquil | 2018/10/30 15:30 | Facundo Arguello v Guilherme Clezar | 4-6,6-2,6-1 |
| Challenger Lima | 2018/10/26 21:00 | Pedro Sousa v Facundo Arguello | 7-6,6-3 |
| Challenger Lima | 2018/10/25 17:00 | Jose Hernandez-Fernandez v Facundo Arguello | 1-6,2-6 |
| Challenger Lima | 2018/10/24 19:20 | Facundo Arguello v Paolo Lorenzi | 6-4,7-6 |
| Challenger Montevideo | 2018/11/08 17:00 | Carlos Berlocq v Paolo Lorenzi | 3-6,6-2,7-5 |
| Challenger Montevideo | 2018/11/06 15:00 | Facundo Bagnis v Carlos Berlocq | 2-6,0-6 |
| Challenger Guayaquil | 2018/10/30 15:30 | Carlos Berlocq v Guido Andreozzi | 6-7,2-6 |
| Challenger Santo Domingo | 2018/10/12 22:15 | Carlos Berlocq v Cristian Garin | 7-5,6-7,1-6 |
| Challenger Santo Domingo | 2018/10/11 19:30 | Carlos Berlocq v Jose Hernandez-Fernandez | 6-1,4-6,6-2 |
| Challenger Santo Domingo | 2018/10/11 14:00 | Santiago Giraldo v Carlos Berlocq | 6-7,6-7 |
| Challenger Santo Domingo | 2018/10/09 18:30 | Carlos Berlocq v Alejandro Gomez | 6-4,6-3 |
| Challenger Campinas | 2018/10/05 20:35 | Carlos Berlocq v Federico Delbonis | 2-6,0-6 |