Stadium: Cancha Siete Leguas Round: 25 Ground: Hardcourt outdoor
| Challenger Puerto Vallarta Qual | 2018/04/30 19:30 | Luis David Martinez v Lucas Gomez | 6-4,7-6 |
| Challenger Puerto Vallarta Qual | 2018/04/29 19:30 | Luis David Martinez v Jorge Panta | 6-0,6-2 |
| Challenger Puerto Vallarta Qual | 2018/04/28 22:35 | Benjamin Lock v Luis David Martinez | 6-4,4-6,6-7 |
| Challenger Panama City Qual | 2018/04/01 16:00 | Peter Torebko v Luis David Martinez | 7-5,6-2 |
| Challenger Panama City Qual | 2018/03/31 19:15 | Luis David Martinez v Marco Bortolotti | 6-1,6-4 |
| Challenger Panama City Qual | 2018/03/31 14:30 | Alejandro Gomez v Luis David Martinez | 4-6,6-3,5-7 |
| Challenger San Luis Potosi Qual | 2018/03/26 00:45 | Luis David Martinez v Roberto Cid Subervi | 1-6,6-4,4-6 |
| Challenger San Luis Potosi Qual | 2018/03/25 22:15 | Luis David Martinez v Jose Pablo Andres | 6-0,6-1 |
| Challenger Leon | 2018/04/24 17:30 | Carlos Gomez-Herrera v Roberto Quiroz | 4-6,5-7 |
| Challenger Guadalajara Qual | 2018/04/14 21:35 | Carlos Gomez-Herrera v Alejandro Gomez | 7-6,6-7,2-6 |
| Challenger Alicante Qual | 2018/04/01 11:45 | Pedro Cachin v Carlos Gomez-Herrera | 6-4,6-7,7-6 |
| Challenger Alicante Qual | 2018/03/31 09:55 | Carlos Gomez-Herrera v Guillermo Olaso | 2-6,7-6,7-5 |
| Challenger Marbella Qual | 2018/03/24 16:30 | Carlos Gomez-Herrera v Lukas Rosol | 6-7,3-6 |
| Challenger Santiago | 2018/03/10 22:00 | Carlos Gomez-Herrera v Marco Cecchinato | 6-1,1-6,1-6 |
| Challenger Santiago | 2018/03/09 20:15 | Jozef Kovalik v Carlos Gomez-Herrera | 3-6,6-7 |
| Challenger Santiago | 2018/03/08 19:45 | Rogerio Dutra Silva v Carlos Gomez-Herrera | 6-4,3-6,3-6 |