Stadium: Estadio Round: 26 Ground: Hardcourt outdoor
| Challenger Guadalajara | 2018/04/18 21:00 | Ante Pavic v Darian King | 3-6,6-2,4-6 |
| Challenger Panama City | 2018/04/03 16:00 | Ante Pavic v Darian King | 6-1,6-4 |
| Challenger Leon | 2018/04/24 00:40 | Ante Pavic v Luis Patino | 6-3,6-3 |
| Challenger Guadalajara | 2018/04/18 21:00 | Ante Pavic v Darian King | 3-6,6-2,4-6 |
| Challenger Guadalajara | 2018/04/16 19:45 | Ante Pavic v Edan Leshem | 7-5,5-7,6-3 |
| Challenger Mexico City Qual | 2018/04/08 19:05 | Ante Pavic v Cristian Rodriguez | 3-6,3-6 |
| Challenger Mexico City Qual | 2018/04/07 19:15 | Ante Pavic v Luis A Pineda Chavez | 6-2,6-4 |
| Challenger Panama City | 2018/04/04 17:00 | Juan Ignacio Londero v Ante Pavic | 6-4,6-4 |
| Challenger Panama City | 2018/04/03 16:00 | Ante Pavic v Darian King | 6-1,6-4 |
| Challenger Le Gosier | 2018/03/29 22:10 | Denis Kudla v Ante Pavic | 6-1,6-1 |
| Challenger Leon | 2018/04/23 20:00 | Manuel Sanchez v Darian King | 4-6,6-7 |
| Challenger Guadalajara | 2018/04/20 21:00 | Pedja Krstin v Darian King | 6-2,1-6,6-2 |
| Challenger Guadalajara | 2018/04/18 21:00 | Ante Pavic v Darian King | 3-6,6-2,4-6 |
| Challenger Guadalajara | 2018/04/17 17:00 | Roberto Quiroz v Darian King | 6-3,3-6,3-6 |
| ATP Houston Qual | 2018/04/07 21:15 | Mitchell Krueger v Darian King | 7-5,6-3 |
| Challenger Panama City | 2018/04/03 16:00 | Ante Pavic v Darian King | 6-1,6-4 |
| Challenger Le Gosier | 2018/03/29 18:00 | Dusan Lajovic v Darian King | 6-3,6-4 |
| Challenger Le Gosier | 2018/03/28 20:45 | Darian King v Tom Jomby | 6-7,6-1,6-2 |