Stadium: Campo 1 Round: 25 Ground: Clay
| Challenger Puerto Vallarta | 2018/05/03 21:00 | Danilo Petrovic v Ante Pavic | 6-3,6-2 |
| Challenger Puerto Vallarta | 2018/05/02 19:00 | Ante Pavic v Viktor Durasovic | 7-6,6-2 |
| Challenger Puerto Vallarta | 2018/05/01 19:30 | Ante Pavic v Manuel Sanchez | 6-2,6-3 |
| Challenger Leon | 2018/04/27 19:30 | Alejandro Gonzalez v Ante Pavic | 3-6,6-4,6-1 |
| Challenger Leon | 2018/04/25 16:00 | Ante Pavic v Darian King | 6-4,6-2 |
| 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 Rome | 2018/05/11 11:50 | Gianluigi Quinzi v Adam Pavlasek | 7-6,3-6,5-7 |
| Challenger Rome | 2018/05/10 11:00 | Gianluigi Quinzi v Rogerio Dutra Silva | 6-4,6-4 |
| Challenger Rome | 2018/05/09 10:25 | Ruben Bemelmans v Gianluigi Quinzi | 6-4,1-6,2-6 |
| Challenger Rome | 2018/05/08 12:05 | Gianluigi Quinzi v Roberto Marcora | 6-4,6-4 |
| Challenger Ostrava | 2018/05/04 12:20 | Gianluigi Quinzi v Gregoire Barrere | 2-6,6-7 |
| Challenger Ostrava | 2018/05/02 10:30 | Gianluigi Quinzi v Lorenzo Giustino | 6-3,6-2 |
| Challenger Ostrava | 2018/05/01 09:00 | Gleb Sakharov v Gianluigi Quinzi | 2-6,1-6 |
| Challenger Francavilla | 2018/04/29 13:00 | Gianluigi Quinzi v Casper Ruud | 6-4,6-1 |