Stadium: Court 1 Round: 25 Ground: Clay
| ITF Poland F8 | 2018/08/22 09:00 | Dimitar Kuzmanov v Drzewiecki, Karol | 6-2,6-4 |
| ITF Poland F8 | 2018/08/20 09:30 | Drzewiecki, Karol v Zukauskas, Simonas | 4-6,6-3,6-4 |
| ITF Poland F8 | 2018/08/19 11:00 | Drzewiecki, Karol v Bednarek, Tomasz | 6-3,6-4 |
| ITF Poland F7 | 2018/08/14 14:35 | Drzewiecki, Karol v Mikula, Michal | 4-6,5-7 |
| ITF Poland F7 | 2018/08/13 08:00 | Drzewiecki, Karol v Zawisza, Pawel | 6-2,6-0 |
| ITF Poland F7 | 2018/08/12 11:00 | Drzewiecki, Karol v Arvid Nordquist | 6-2,6-4 |
| Challenger Sopot Qual | 2018/07/28 09:00 | Drzewiecki, Karol v Jonathan Mridha | 4-6,0-6 |
| ITF Germany F8 Qual | 2018/07/15 12:30 | Drzewiecki, Karol v Seibert, Tim | 5-7,2-6 |
| Genoa, Italy | 2018/09/05 12:10 | Quinzi, Gianluigi v Galovic, Viktor | 6-4,4-6,3-6 |
| US Open, New York, USA | 2018/08/21 18:50 | Quinzi, Gianluigi v Pedro Martinez | 3-6,4-6 |
| Portoroz, Slovénie | 2018/08/07 14:25 | Quinzi, Gianluigi v Gian Marco Moroni | 3-6,7-6,5-7 |
| Challenger Padova | 2018/07/24 15:15 | Pavic, Ante v Quinzi, Gianluigi | 7-6,6-4 |
| Challenger San Benedetto | 2018/07/19 19:15 | Quinzi, Gianluigi v Guttierrez-Ferrol, Sergio | 6-1,4-6,1-6 |
| Challenger San Benedetto | 2018/07/17 19:00 | Quinzi, Gianluigi v Andrea Vavassori | 6-0,6-0 |
| Challenger Perugia | 2018/07/15 19:30 | Quinzi, Gianluigi v Ulises Blanch | 5-7,2-6 |
| Challenger Perugia | 2018/07/14 17:10 | Salvatore Caruso v Quinzi, Gianluigi | 2-6,0-6 |