stadio: Court 8 Round: 25 Ground: Clay
| Challenger Mestre | 2018/05/26 11:00 | Gianluigi Quinzi v Danilo Petrovic | 6-2,7-6 |
| Challenger Mestre | 2018/05/25 09:30 | Sergio Gutierrez-Ferrol v Danilo Petrovic | 6-1,4-6,1-6 |
| Challenger Mestre | 2018/05/24 09:30 | Scott Griekspoor v Danilo Petrovic | 7-6,6-7,1-6 |
| Challenger Mestre | 2018/05/21 12:10 | Andrea Basso v Danilo Petrovic | 6-2,1-6,3-6 |
| Challenger Puerto Vallarta | 2018/05/05 23:00 | Adrian Menendez-Maceiras v Danilo Petrovic | 1-6,7-5,6-3 |
| Challenger Puerto Vallarta | 2018/05/04 23:00 | Danilo Petrovic v Carlos Gomez-Herrera | 6-3,6-3 |
| 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 | Danilo Petrovic v Ugo Humbert | 6-4,3-6,6-3 |
| Challenger Mestre | 2018/05/25 13:50 | Lorenzo Giustino v Gianluigi Quinzi | 6-2,6-7,3-6 |
| Challenger Mestre | 2018/05/24 09:00 | Lorenzo Giustino v Liam Caruana | 6-1,6-1 |
| Challenger Mestre | 2018/05/21 13:25 | Lorenzo Giustino v Carlos Gomez-Herrera | 7-5,6-4 |
| Challenger Lisbona | 2018/05/17 16:50 | Pedro Sousa v Lorenzo Giustino | 6-2,6-0 |
| Challenger Lisbona | 2018/05/15 17:05 | Lorenzo Giustino v Joris De Loore | 7-5,1-6,7-6 |
| Challenger Braga | 2018/05/09 10:00 | Lorenzo Giustino v Alex De Minaur | 5-7,7-5,2-6 |
| Challenger Braga | 2018/05/07 13:30 | Lorenzo Giustino v Scott Griekspoor | 4-6,6-3,6-3 |
| Challenger Ostrava | 2018/05/02 10:30 | Gianluigi Quinzi v Lorenzo Giustino | 6-3,6-2 |