| ITF M25 Weston | 01/27 15:30 | 44 | Michael Zhu v Karol Drzewiecki | 6-2,1-6,5-10 | |
| ITF M25 Weston | 01/26 15:30 | 44 | Karol Drzewiecki v Filip Bergevi | 6-3,6-2 | |
| ITF M25 Rancho Santa Fe | 01/14 17:30 | 54 | [496] Facundo D Acosta v Karol Drzewiecki [206] | 6-2,6-4 | |
| ITF M25 Rancho Santa Fe | 01/13 18:00 | 54 | Karol Drzewiecki v Austin Rapp | 6-4,6-4 | |
| ITF - M25 - Los Angeles | 01/08 21:40 | 25 | [207] Karol Drzewiecki v Facundo D Acosta [500] | 3-6,3-6 | |
| ITF - M25 - Los Angeles | 01/07 18:00 | 54 | Karol Drzewiecki v Isaiah Strode | 6-4,6-3 | |
| ITF - M25 - Los Angeles | 01/06 18:00 | 54 | Alec Adamson v Karol Drzewiecki | 1-6,6-7 | |
| Challenger Helsinky | 11/11 11:00 | 28 | [167] Karol Drzewiecki v Jaroslav Pospíšil [421] | 4-6,0-6 | |
| ITF M15 Opava | 10/31 10:30 | 26 | Mattia Bellucci v Karol Drzewiecki | 3-6,7-6,6-3 | |
| ITF M15 Opava | 10/30 15:50 | 25 | Karol Drzewiecki v Andrej Glvac | 7-5,6-2 | |
| Challenger Glasgow | 09/18 11:15 | 25 | [221] Mirza Basic v Karol Drzewiecki [200] | 6-4,6-3 | |
| Challenger Glasgow | 09/17 09:00 | 24 | [313] Hugo Grenier v Karol Drzewiecki [200] | 3-6,7-5,2-6 | |
| Challenger Glasgow | 09/16 09:00 | 166 | Karol Drzewiecki v Scott Duncan | 5-7,6-4,3-6 | |
| Challenger Szczecin | 09/10 15:45 | 24 | [385] Ivan Gakhov v Karol Drzewiecki [159] | 6-2,7-6 | |
| ITF M25 Poznaň | 08/20 08:00 | 54 | Karol Drzewiecki v Filip Kolasinski | 7-5,5-7,10-12 | |
| Challenger Meerbusch | 08/12 08:00 | 166 | Ricardo Ojeda Lara v Karol Drzewiecki | 6-1,6-3 | |
| ITF M25 Nussloch | 01/21 17:45 | 45 | Ryan Peniston v Karol Drzewiecki | 7-6,6-3 | |
| ITF M25 Nussloch | 01/21 12:45 | 45 | Davide Pozzi v Karol Drzewiecki | 1-6,2-6 | |
| ITF Czech Republic F9 | 11/11 10:00 | 29 | Karol Drzewiecki v Jonas Forejtek | 6-3,6-4 | |
| ITF Czech Republic F9 | 11/10 10:00 | 28 | Maciej Rajski v Karol Drzewiecki | 6-4,4-6,4-6 | |
| ITF Czech Republic F9 | 11/09 10:35 | 27 | [246] Karol Drzewiecki v Petr Nouza [362] | 6-3,6-4 | |
| ITF Czech Republic F9 | 11/08 13:10 | 26 | [498] Michael Vrbensky v Karol Drzewiecki [246] | 5-7,6-7 | |
| ITF Czech Republic F9 | 11/07 12:25 | 25 | Karol Drzewiecki v Michal Selecky | 6-4,6-3 | |
| ITF Czech Republic F8 | 11/01 11:25 | 26 | Karol Drzewiecki v Michal Selecky | 4-6,6-2,6-7 | |
| ITF Czech Republic F8 | 10/31 17:00 | 25 | [381] Aslan Karatsev v Karol Drzewiecki [245] | 2-6,2-6 | |
| ITF Czech Republic F8 | 10/30 12:05 | 54 | Karol Drzewiecki v Amadatus Admiraal | 6-2,7-6 | |
| ITF Czech Republic F8 | 10/29 13:00 | 54 | Karol Drzewiecki v Evzen Holis | 6-3,6-4 | |
| ITF Czech Republic F7 | 10/25 11:00 | 26 | [479] Michael Vrbensky v Karol Drzewiecki [249] | 3-6,6-4,6-4 | |
| ITF Czech Republic F7 | 10/24 10:05 | 25 | Karol Drzewiecki v Marek Semjan | 6-1,3-6,6-4 | |
| Challenger Almaty 2 | 09/30 06:40 | 46 | Bogdan Bobrov v Karol Drzewiecki | 6-3,7-6 |