| Challenger Perugia | 07/13 17:00 | 27 | [197] Gimeno-Traver, Daniel v Quinzi, Gianluigi [200] | 1-6,2-6 | |
| Challenger Perugia | 07/12 11:00 | 26 | [200] Quinzi, Gianluigi v Donati, Matteo [176] | 6-4,6-4 | |
| Challenger Perugia | 07/11 13:00 | 25 | [196] Ojeda Lara, Ricardo v Quinzi, Gianluigi [200] | 4-6,5-7 | |
| Milan, Italy | 06/28 15:30 | 26 | [241] Arnaboldi, Andrea v Quinzi, Gianluigi [206] | 7-5,2-6,6-3 | |
| Milan, Italy | 06/26 13:40 | 25 | [281] Hernan Casanova v Quinzi, Gianluigi [206] | 4-6,4-6 | |
| L'Aquila, Italie | 06/22 13:00 | 27 | [213] Clezar, Guilherme v Quinzi, Gianluigi [216] | 6-3,1-6,7-6 | |
| L'Aquila, Italie | 06/21 08:00 | 26 | [410] Benjamin Hassan v Quinzi, Gianluigi [216] | 3-6,4-6 | |
| L'Aquila, Italie | 06/18 17:00 | 25 | [244] Quiroz, Roberto v Quinzi, Gianluigi [216] | 2-6,4-6 | |
| Challenger Vicenza | 05/31 12:30 | 26 | [231] Clezar, Guilherme v Quinzi, Gianluigi [204] | 6-4,6-3 | |
| Challenger Vicenza | 05/30 09:00 | 25 | [351] Gianluca Mager v Quinzi, Gianluigi [204] | 2-6,3-6 | |
| Challenger Mestre | 05/27 13:00 | 29 | [358] Gian Marco Moroni v Quinzi, Gianluigi [243] | 2-6,2-6 | |
| Challenger Mestre | 05/26 11:00 | 28 | [243] Quinzi, Gianluigi v Petrovic, Danilo [235] | 6-2,7-6 | |
| Challenger Mestre | 05/25 13:50 | 27 | [276] Lorenzo Giustino v Quinzi, Gianluigi [243] | 6-2,6-7,3-6 | |
| Challenger Mestre | 05/24 12:55 | 26 | [318] Baldi, Filippo v Quinzi, Gianluigi [243] | Retired | |
| Challenger Mestre | 05/23 10:15 | 25 | [316] Federico Gaio v Quinzi, Gianluigi [243] | 6-7,3-6 | |
| Challenger - Rome | 05/11 11:50 | 28 | [259] Quinzi, Gianluigi v Pavlasek, Adam [245] | 7-6,3-6,5-7 | |
| Challenger - Rome | 05/10 11:00 | 27 | [259] Quinzi, Gianluigi v Dutra Silva, Rogerio [116] | 6-4,6-4 | |
| Challenger - Rome | 05/09 10:25 | 26 | [107] Bemelmans, Ruben v Quinzi, Gianluigi [259] | 6-4,1-6,2-6 | |
| Challenger - Rome | 05/08 12:05 | 25 | [259] Quinzi, Gianluigi v Marcora, Roberto [463] | 6-4,6-4 | |
| Challenger - Ostrava | 05/04 12:20 | 27 | [265] Quinzi, Gianluigi v Gregoire Barrere [282] | 2-6,6-7 | |
| Challenger - Ostrava | 05/02 10:30 | 26 | [265] Quinzi, Gianluigi v Lorenzo Giustino [250] | 6-3,6-2 | |
| Challenger - Ostrava | 05/01 09:00 | 25 | [189] Gleb Sakharov v Quinzi, Gianluigi [265] | 2-6,1-6 | |
| Challenger - Francavilla | 04/29 13:00 | 29 | [347] Quinzi, Gianluigi v Casper Ruud [205] | 6-4,6-1 | |
| Challenger - Francavilla | 04/28 12:45 | 28 | [237] Tallon Griekspoor v Quinzi, Gianluigi [347] | 4-6,2-6 | |
| Challenger - Francavilla | 04/27 12:00 | 27 | [347] Quinzi, Gianluigi v Andrea Pellegrino [328] | 6-4,5-7,6-2 | |
| Challenger - Francavilla | 04/26 14:30 | 26 | [321] Vanni, Luca v Quinzi, Gianluigi [347] | 6-7,2-6 | |
| Challenger - Francavilla | 04/24 16:30 | 25 | [347] Quinzi, Gianluigi v Joris De Loore [319] | 6-4,6-3 | |
| Challenger Alicante Qual | 03/31 14:55 | 45 | [388] Samper-Montana, Jordi v Quinzi, Gianluigi [283] | 6-2,3-6,6-4 | |
| Challenger Marbella Qual | 03/24 13:45 | 45 | [218] Sumit Nagal v Quinzi, Gianluigi [283] | 6-3,3-6,6-3 | |
| Shenzhen, China, Qualifying | 03/12 03:00 | 54 | Rola, Blaz v Quinzi, Gianluigi | 6-3,6-4 |