| ITF M25 Monastir | 11/02 09:00 | 28 | Petros Chrysochos v Quinzi, Gianluigi | 7-6,6-1 | |
| ITF M25 Monastir | 11/01 10:00 | 27 | [439] Aziz Dougaz v Quinzi, Gianluigi [372] | 3-6,6-0,1-6 | |
| ITF M25 Monastir | 10/31 11:25 | 26 | Quinzi, Gianluigi v Matteo Martineau | 6-7,6-4,6-2 | |
| ITF M25 Monastir | 10/30 10:45 | 25 | Quinzi, Gianluigi v Alexis Gautier | 6-1,6-1 | |
| Challenger - Barcelone | 09/30 10:30 | 24 | [298] Ehrat, Sandro v Quinzi, Gianluigi [356] | 6-4,6-1 | |
| Florence, Italy | 09/25 13:55 | 25 | [80] Kohlschreiber, Philipp v Quinzi, Gianluigi [359] | 6-2,6-2 | |
| Florence, Italy | 09/24 12:40 | 24 | [359] Quinzi, Gianluigi v Dmitry Popko [209] | Retired | |
| Challenger Biella | 09/17 08:00 | 24 | [357] Quinzi, Gianluigi v Oscar Jose Gutierrez [395] | 2-6,6-1,3-6 | |
| Challenger Como | 08/27 13:35 | 25 | [221] Christopher O'Connell v Quinzi, Gianluigi [313] | Retired | |
| Challenger Como | 08/26 13:30 | 24 | [313] Quinzi, Gianluigi v Eriksson, Markus [278] | 7-5,6-4 | |
| L'Aquila, Italie | 08/21 15:30 | 25 | [137] Martin, Andrej v Quinzi, Gianluigi [315] | 6-3,6-2 | |
| L'Aquila, Italie | 08/19 11:05 | 24 | [315] Quinzi, Gianluigi v Gonzalez, Alejandro [495] | 6-3,6-1 | |
| Cordenons, Italy | 08/13 09:30 | 24 | [309] Quinzi, Gianluigi v Andrea Collarini [332] | 0-6,2-6 | |
| Challenger San Benedetto | 07/17 17:30 | 25 | [285] Quinzi, Gianluigi v Renzo Olivo [330] | Retired | |
| Challenger Perugia | 07/12 11:00 | 27 | [164] Garcia-Lopez, Guillermo v Quinzi, Gianluigi [262] | 6-3,1-6,7-6 | |
| Challenger Perugia | 07/11 13:45 | 26 | [262] Quinzi, Gianluigi v Clezar, Guilherme [322] | 6-3,4-6,7-6 | |
| Challenger Perugia | 07/10 13:00 | 25 | [181] Horansky, Filip v Quinzi, Gianluigi [262] | 6-3,2-6,2-6 | |
| Challenger Perugia | 07/09 14:30 | 24 | [262] Quinzi, Gianluigi v Marcora, Roberto [215] | 6-7,6-3,6-3 | |
| Ludwigshafen, Allemagne | 07/02 16:00 | 24 | [262] Quinzi, Gianluigi v Nicola Kuhn [238] | 6-3,6-7,3-6 | |
| Parma II, Italy | 06/20 16:00 | 26 | [200] Federico Gaio v Quinzi, Gianluigi [252] | 6-3,6-4 | |
| Parma II, Italy | 06/19 11:45 | 25 | [483] Bortolotti, Marco v Quinzi, Gianluigi [252] | 1-6,3-6 | |
| Challenger Vicenza | 05/28 10:05 | 24 | [253] Quinzi, Gianluigi v Forti, Francesco [482] | 6-3,2-6,4-6 | |
| French Open, Paris, France | 05/22 13:05 | 45 | [200] Quinzi, Gianluigi v Manuel Guinard [420] | 3-6,6-7 | |
| French Open, Paris, France | 05/20 10:20 | 44 | [200] Quinzi, Gianluigi v Marc Polmans [190] | 6-2,1-6,6-3 | |
| Challenger - Francavilla | 04/23 12:45 | 25 | [297] Brkic, Tomislav v Quinzi, Gianluigi [142] | 6-3,6-0 | |
| Challenger - Barletta | 04/11 08:00 | 26 | [146] Quinzi, Gianluigi v Mohamed Safwat [203] | 4-6,3-6 | |
| Challenger - Barletta | 04/10 08:00 | 25 | [146] Quinzi, Gianluigi v Denis Yevseyev [315] | 6-2,4-6,7-5 | |
| ATP - Miami | 03/18 15:35 | 44 | [46] Radu Albot v Quinzi, Gianluigi [144] | 7-6,6-0 | |
| Challenger - Phoenix | 03/11 19:55 | 24 | [147] Quinzi, Gianluigi v Harrison, Ryan [104] | Retired | |
| ATP - Indian Wells | 03/06 00:30 | 44 | [147] Quinzi, Gianluigi v Alex Bolt [125] | 4-6,5-7 |