Stadium: C Round: 28 Ground: Clay
| Challenger Mestre | 2018/05/25 13:50 | Lorenzo Giustino v Gianluigi Quinzi | 6-2,6-7,3-6 |
| Challenger Mestre | 2018/05/23 10:15 | Federico Gaio v Gianluigi Quinzi | 6-7,3-6 |
| 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 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 Puerto Vallarta | 2018/05/01 18:35 | Danilo Petrovic v Gonzalo Escobar | 6-3,1-6,6-2 |