Stadium: Cancha 1 Round: 28 Ground: Clay
| Challenger Montevideo | 2018/11/09 23:00 | Mario Vilella Martinez v Martin Cuevas | 6-3,6-4 |
| Challenger Montevideo | 2018/11/08 19:50 | Mario Vilella Martinez v Dimitar Kuzmanov | 6-2,7-6 |
| Challenger Montevideo | 2018/11/06 23:40 | Pablo Cuevas v Mario Vilella Martinez | 2-6,2-6 |
| Challenger Santo Domingo | 2018/10/08 17:30 | Mario Vilella Martinez v Rogerio Dutra Silva | 1-6,3-6 |
| Challenger Monterrey | 2018/10/02 19:20 | Sebastian Ofner v Mario Vilella Martinez | 6-1,6-2 |
| Challenger Szczecin | 2018/09/13 11:00 | Mario Vilella Martinez v Guido Andreozzi | 4-6,3-6 |
| Challenger Szczecin | 2018/09/11 10:50 | Gian Marco Moroni v Mario Vilella Martinez | 2-6,2-6 |
| Challenger Seville | 2018/09/03 08:30 | Mario Vilella Martinez v Kimmer Coppejans | 2-6,7-5,6-7 |
| Challenger Montevideo | 2018/11/09 20:00 | Facundo Arguello v Carlos Berlocq | 3-6,6-3,5-7 |
| 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 |