Stadium: Center Court Round: 26 Ground: Clay
| Challenger Caltanissetta | 2016/06/10 14:30 | Donati, Matteo v Quinzi, Gianluigi | 6-4,3-6,6-4 |
| Challenger Perugia | 2018/07/11 13:00 | Ojeda Lara, Ricardo v Quinzi, Gianluigi | 4-6,5-7 |
| Milan, Italy | 2018/06/28 15:30 | Arnaboldi, Andrea v Quinzi, Gianluigi | 7-5,2-6,6-3 |
| Milan, Italy | 2018/06/26 13:40 | Hernan Casanova v Quinzi, Gianluigi | 4-6,4-6 |
| L'Aquila, Italie | 2018/06/22 13:00 | Clezar, Guilherme v Quinzi, Gianluigi | 6-3,1-6,7-6 |
| L'Aquila, Italie | 2018/06/21 08:00 | Benjamin Hassan v Quinzi, Gianluigi | 3-6,4-6 |
| L'Aquila, Italie | 2018/06/18 17:00 | Quiroz, Roberto v Quinzi, Gianluigi | 2-6,4-6 |
| Challenger - Vicence | 2018/05/31 12:30 | Clezar, Guilherme v Quinzi, Gianluigi | 6-4,6-3 |
| Challenger - Vicence | 2018/05/30 09:00 | Gianluca Mager v Quinzi, Gianluigi | 2-6,3-6 |
| Challenger Perugia | 2018/07/11 09:00 | Escobar, Gonzalo v Donati, Matteo | 6-7,4-6 |
| Wimbledon Qual | 2018/06/25 10:00 | Donati, Matteo v Bernard Tomic | 6-7,3-6 |
| Challenger Caltanissetta | 2018/06/17 16:00 | Jaume Munar v Donati, Matteo | 6-2,7-6 |
| Challenger Caltanissetta | 2018/06/16 17:50 | Donati, Matteo v Balazs, Attila | 0-6,6-4,6-4 |
| Challenger Caltanissetta | 2018/06/12 10:40 | Donati, Matteo v Casper Ruud | 7-6,7-5 |
| Poznan, Poland | 2018/06/07 16:00 | Donati, Matteo v Hubert Hurkacz | 3-6,7-6,3-6 |
| Poznan, Poland | 2018/06/06 10:00 | Dembek, Michal v Donati, Matteo | 6-7,3-6 |
| Challenger - Vicence | 2018/06/03 09:15 | Hugo Dellien v Donati, Matteo | 6-4,5-7,6-4 |