Stadium: C Round: 27 Ground: Clay
| Challenger - Ostrava | 2018/05/02 10:30 | Quinzi, Gianluigi v Lorenzo Giustino | 6-3,6-2 |
| Cordenons, Italy | 2017/08/15 14:35 | Lorenzo Giustino v Quinzi, Gianluigi | 4-6,6-2,6-1 |
| Challenger Mestre | 2018/05/24 09:00 | Lorenzo Giustino v Caruana, Liam | 6-1,6-1 |
| Challenger Mestre | 2018/05/21 13:25 | Lorenzo Giustino v Gomez-Herrera, Carlos | 7-5,6-4 |
| Lisbon, Portugal | 2018/05/17 16:50 | Sousa, Pedro v Lorenzo Giustino | 6-2,6-0 |
| Lisbon, Portugal | 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 Griekspoor, Scott | 4-6,6-3,6-3 |
| Challenger - Ostrava | 2018/05/02 10:30 | Quinzi, Gianluigi v Lorenzo Giustino | 6-3,6-2 |
| Challenger - Ostrava | 2018/04/30 15:15 | Lorenzo Giustino v Rikl, Patrik | 6-3,7-6 |
| Challenger Mestre | 2018/05/23 10:15 | Federico Gaio v Quinzi, Gianluigi | 6-7,3-6 |
| Challenger - Rome | 2018/05/11 11:50 | Quinzi, Gianluigi v Pavlasek, Adam | 7-6,3-6,5-7 |
| Challenger - Rome | 2018/05/10 11:00 | Quinzi, Gianluigi v Dutra Silva, Rogerio | 6-4,6-4 |
| Challenger - Rome | 2018/05/09 10:25 | Bemelmans, Ruben v Quinzi, Gianluigi | 6-4,1-6,2-6 |
| Challenger - Rome | 2018/05/08 12:05 | Quinzi, Gianluigi v Marcora, Roberto | 6-4,6-4 |
| Challenger - Ostrava | 2018/05/04 12:20 | Quinzi, Gianluigi v Gregoire Barrere | 2-6,6-7 |
| Challenger - Ostrava | 2018/05/02 10:30 | Quinzi, Gianluigi v Lorenzo Giustino | 6-3,6-2 |
| Challenger - Ostrava | 2018/05/01 09:00 | Gleb Sakharov v Quinzi, Gianluigi | 2-6,1-6 |