Stadium: Campo 1 Round: 25 Ground: Clay
| 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 |
| ITF Canada F2 | 2018/03/06 18:35 | Ante Pavic v Michael Redlicki | 4-6,7-6,5-7 |
| Challenger Alicante Qual | 2018/03/31 14:55 | Jordi Samper-Montana v Gianluigi Quinzi | 6-2,3-6,6-4 |
| Challenger Marbella Qual | 2018/03/24 13:45 | Sumit Nagal v Gianluigi Quinzi | 6-3,3-6,6-3 |
| Challenger Shenzhen Qual | 2018/03/12 03:00 | Blaz Rola v Gianluigi Quinzi | 6-3,6-4 |
| Challenger Shenzhen Qual | 2018/03/11 06:00 | Yunseong Chung v Gianluigi Quinzi | 6-7,6-3,5-7 |
| Challenger Shenzhen Qual | 2018/03/11 01:30 | Rigele Te v Gianluigi Quinzi | 6-7,5-7 |
| Challenger Bergamo | 2018/02/22 17:00 | Gianluigi Quinzi v Andrea Arnaboldi | 6-7,6-3,3-6 |
| Challenger Bergamo | 2018/02/20 14:00 | Gianluigi Quinzi v Andrea Basso | 6-4,6-2 |
| ITF Egypt F4 | 2018/02/11 08:00 | Jaroslav Pospisil v Gianluigi Quinzi | 2-6,4-6 |