Stadium: Central Round: 26 Ground: Hardcourt indoor
| Challenger Szczecin | 2021/09/12 14:45 | Drzewiecki, Karol v Bogdan Bobrov | 2-6,4-6 |
| Challenger - Cherbourg | 2021/02/07 09:30 | Vladyslav Orlov v Drzewiecki, Karol | 6-3,6-2 |
| Polish National Tour | 2020/07/24 09:00 | Drzewiecki, Karol v Kolasinski, Filip | 1-6,1-6 |
| Polish National Tour | 2020/06/17 13:57 | Pawel Juszczak v Drzewiecki, Karol | 0-0 |
| Polish National Tour | 2020/06/17 07:00 | Drzewiecki, Karol v Galus, Piotr | 6-1,7-5 |
| Palm Coast, Singles M-ITF-USA-05A | 2020/02/03 18:00 | Pla Malfeito, Jaume v Drzewiecki, Karol | 6-4,6-3 |
| ITF M25 Weston | 2020/01/28 14:00 | Gomez, Alejandro v Drzewiecki, Karol | 7-5,6-3 |
| ITF M25 Weston | 2020/01/27 15:30 | Michael Zhu v Drzewiecki, Karol | 6-2,1-6,5-10 |
| Polish National Tour | 2020/07/29 14:00 | Pawel Juszczak v Walkow, Szymon | 4-6,6-1,6-2 |
| Polish National Tour | 2020/07/06 12:00 | Walkow, Szymon v Wojcik, Yann | 2-6,1-6 |
| Polish National Tour | 2020/06/21 09:30 | Piotr Grynkowski v Walkow, Szymon | 5-7,6-3,7-6 |
| Nur Sultan, Kazakhstan | 2020/03/11 06:30 | Elias Ymer v Walkow, Szymon | 6-1,7-6 |
| Nur Sultan, Kazakhstan | 2020/03/10 06:05 | Elgin, M. v Walkow, Szymon | 3-6,1-6 |
| Czech Extraliga, Men | 2019/12/14 11:00 | Walkow, Szymon v Kenny de Schepper | 2-6,2-5 |
| Czech Extraliga, Men | 2019/12/13 12:10 | Jozef Kovalik v Walkow, Szymon | 6-2,6-2 |
| Challenger - Glasgow | 2019/09/16 09:00 | Jonathan Mridha v Walkow, Szymon | 4-6,6-2,7-6 |