Stadium: Cancha 5 Round: 26
| Challenger Panama City | 2018/04/03 16:00 | Ante Pavic v Darian King | 6-1,6-4 |
| 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 Le Gosier | 2018/03/27 19:30 | Santiago Giraldo v Ante Pavic | 2-6,6-3,6-7 |
| Challenger Drummondville | 2018/03/14 22:30 | Vasek Pospisil v Ante Pavic | 7-5,6-3 |
| 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 |
| ATP Miami | 2018/03/22 15:00 | Nicola Kuhn v Darian King | 7-6,6-4 |
| ATP Miami Qual | 2018/03/20 14:00 | Darian King v Mackenzie McDonald | 2-6,6-4,6-4 |
| ATP Miami Qual | 2018/03/19 14:00 | Roberto Carballes Baena v Darian King | 6-2,2-6,4-6 |