 Spain: M15 Villena - Singles - Main |
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| 1/8-finals | Quinzi G. | Lopez Montagud C. | 0:1 RET. (2:6, 0:2) | details | 19.11.2020 |
| 1/16-finals | Quinzi G. | Esteve L. E. | 2:0 (7:61, 7:61) | details | 18.11.2020 |
| Spain: M15 Valldoreix - Singles - Main |
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| Quarter-finals | Quinzi G. | Barranco Cosano J. | 1:2 (67:7, 7:5, 4:6) | details | 13.11.2020 |
| 1/8-finals | Quinzi G. | Dussin L. | 2:0 (6:3, 6:4) | details | 12.11.2020 |
| 1/16-finals | Quinzi G. | Lopez San Martin A. | 2:0 (6:4, 6:4) | details | 10.11.2020 |
 Portugal: M25 Vale do Lobo - Singles - Main |
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| 1/16-finals | Quinzi G. | Tseng C. H. | 0:2 (4:6, 4:6) | details | 28.10.2020 |
 Czech Republic: M25 Jablonec nad Nisou - Singles - Main |
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| Final | Quinzi G. | Velotti A. | 0:2 (2:6, 1:6) | details | 27.09.2020 |
| Semi-finals | Quinzi G. | Ignatik U. | 2:0 (7:69, 6:4) | details | 27.09.2020 |
| Quarter-finals | Cuevas M. | Quinzi G. | 0:2 (2:6, 4:6) | details | 25.09.2020 |
| 1/8-finals | Quinzi G. | Lindell Ch. | 2:0 (6:4, 6:2) | details | 24.09.2020 |
| 1/16-finals | Quinzi G. | Lehecka J. | 2:0 (6:3, 6:3) | details | 23.09.2020 |
 Switzerland: M15 Caslano - Singles - Main |
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| Quarter-finals | Bega A. | Quinzi G. | 2:0 (6:4, 7:62) | details | 04.09.2020 |
| 1/8-finals | Quinzi G. | Lama G. | 2:0 (6:2, 6:3) | details | 03.09.2020 |
| 1/16-finals | Balzerani R. | Quinzi G. | 0:2 (4:6, 62:7) | details | 02.09.2020 |
 Austria: M15 Anif - Singles - Main |
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| 1/16-finals | Gerch L. | Quinzi G. | 2:1 (2:6, 6:3, 6:4) | details | 25.08.2020 |
| Austria: M25 Vogau - Singles - Main |
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| 1/8-finals | Quinzi G. | Guinard M. | 0:2 (2:6, 1:6) | details | 20.08.2020 |
| 1/16-finals | Martineau M. | Quinzi G. | 1:2 (6:3, 3:6, 2:6) | details | 19.08.2020 |
| Spain: M25 Murcia - Singles - Main |
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| 1/16-finals | Quinzi G. | Llamas Ruiz P. | 1:2 (4:6, 6:3, 64:7) | details | 04.03.2020 |
 Turkey: M25 Antalya - Singles - Main |
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| 1/8-finals | Quinzi G. | Cachin P. | 0:2 (4:6, 65:7) | details | 27.02.2020 |
| 1/16-finals | Kirkin E. | Quinzi G. | 0:2 (2:6, 3:6) | details | 26.02.2020 |
 USA: M25 Palm Coast - Singles - Main |
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| Quarter-finals | Quinzi G. | Podzus M. | 0:2 (3:6, 4:6) | details | 07.02.2020 |
| 1/8-finals | Quinzi G. | Gerch L. | 2:1 (3:6, 7:62, 6:1) | details | 06.02.2020 |
| 1/16-finals | Quinzi G. | Gomez F. A. | 2:0 (6:3, 6:4) | details | 05.02.2020 |
| USA: M25 Weston - Singles - Main |
|---|
| Final | Lindell Ch. | Quinzi G. | 1:2 (6:3, 5:7, 5:7) | details | 02.02.2020 |
| Semi-finals | Pena Lopez M. | Quinzi G. | 0:2 (61:7, 2:6) | details | 01.02.2020 |
| Quarter-finals | Quinzi G. | Torebko P. | 2:1 (3:6, 7:64, 7:5) | details | 31.01.2020 |
| 1/8-finals | Quinzi G. | Podzus M. | 2:0 (6:2, 6:4) | details | 30.01.2020 |
| 1/16-finals | Quinzi G. | Esteve L. E. | 2:0 (6:4, 6:2) | details | 29.01.2020 |
| Spain: Barcelona - Singles - Main |
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| 1/32-finals | Ehrat S. | Quinzi G. | 2:0 (6:4, 6:1) | details | 30.09.2019 |
 Italy: Florence - Singles - Main |
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| 1/16-finals | Kohlschreiber P. | Quinzi G. | 2:0 (6:2, 6:2) | details | 25.09.2019 |
| 1/32-finals | Quinzi G. | Popko D. | 1:0 RET. (6:3, 2:0) | details | 24.09.2019 |
| Italy: Biella - Singles - Main |
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| 1/32-finals | Quinzi G. | Gutierrez O. J. | 1:2 (2:6, 6:1, 3:6) | details | 17.09.2019 |
| Italy: Como - Singles - Main |
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| 1/16-finals | O'Connell C. | Quinzi G. | 1:1 RET. (6:0, 64:7, 1:1) | details | 27.08.2019 |
| 1/32-finals | Quinzi G. | Eriksson M. | 2:0 (7:5, 6:4) | details | 26.08.2019 |
| Italy: L'Aquila - Singles - Main |
|---|
| 1/16-finals | Martin A. | Quinzi G. | 2:0 (6:3, 6:2) | details | 21.08.2019 |
| 1/32-finals | Quinzi G. | Gonzalez A. | 2:0 (6:3, 6:1) | details | 19.08.2019 |
| Italy: Cordenons - Singles - Main |
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| 1/32-finals | Quinzi G. | Collarini A. | 0:2 (0:6, 2:6) | details | 13.08.2019 |
| Italy: San Benedetto - Singles - Main |
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| 1/16-finals | Quinzi G. | Olivo R. | 0:1 RET. (3:6, 0:1) | details | 17.07.2019 |
| Italy: Perugia - Singles - Main |
|---|
| Quarter-finals | Garcia-Lopez G. | Quinzi G. | 2:1 (6:3, 1:6, 7:62) | details | 12.07.2019 |
| 1/8-finals | Quinzi G. | Clezar G. | 2:1 (6:3, 4:6, 7:63) | details | 11.07.2019 |
| 1/16-finals | Horansky F. | Quinzi G. | 1:2 (6:3, 2:6, 2:6) | details | 10.07.2019 |
| 1/32-finals | Quinzi G. | Marcora R. | 2:1 (66:7, 6:3, 6:3) | details | 09.07.2019 |
 Germany: Ludwigshafen - Singles - Main |
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| 1/32-finals | Quinzi G. | Kuhn N. | 1:2 (6:3, 65:7, 3:6) | details | 02.07.2019 |
| Italy: Parma - Singles - Main |
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| 1/8-finals | Gaio F. | Quinzi G. | 2:0 (6:3, 6:4) | details | 20.06.2019 |
| 1/16-finals | Bortolotti M. | Quinzi G. | 0:2 (1:6, 3:6) | details | 19.06.2019 |
| Italy: Vicenza - Singles - Main |
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| 1/32-finals | Quinzi G. | Forti F. | 1:2 (6:3, 2:6, 4:6) | details | 28.05.2019 |
 France: French Open - Singles - Qualification |
|---|
| Semi-finals | Quinzi G. | Guinard M. | 0:2 (3:6, 64:7) | details | 22.05.2019 |
| Quarter-finals | Quinzi G. | Polmans M. | 2:1 (6:2, 1:6, 6:3) | details | 20.05.2019 |
| Italy: Francavilla - Singles - Main |
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| 1/16-finals | Brkic T. | Quinzi G. | 2:0 (6:3, 6:0) | details | 23.04.2019 |
| Italy: Barletta - Singles - Main |
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| 1/8-finals | Quinzi G. | Safwat M. | 0:2 (4:6, 3:6) | details | 11.04.2019 |