Stadium: Court 5 Round: 44 Ground: Clay
| ITF M25 Poznan | 2023/08/21 12:55 | Przemyslaw Michocki v Piotr Kusiewicz | 6-4,6-2 |
| ITF M25 Bielsko Biala | 2023/08/14 10:30 | Piotr Kusiewicz v Andrea Meduri | 1-6,2-6 |
| ITF M25 Lodz | 2023/08/07 07:30 | Piotr Kusiewicz v Egor Baklanov | 7-6,5-7,8-10 |
| ITF M25 Kramsach | 2023/07/24 09:00 | Piotr Kusiewicz v Ivan Kremenchutskyi | 2-6,1-6 |
| ITF M25 Kramsach | 2023/07/23 15:00 | Piotr Kusiewicz v Elias Sumann | 6-3,3-6,10-5 |
| ITF M25 Kramsach | 2023/07/23 07:00 | Piotr Kusiewicz v Adam Blecha | 6-2,6-3 |
| ITF M15 Wroclaw | 2023/06/25 09:00 | Aleksander Orlikowski v Piotr Kusiewicz | 6-3,6-2 |
| ITF M15 Nyiregyhaza | 2023/06/05 10:30 | Ivan Kremenchutskyi v Piotr Kusiewicz | 6-3,6-2 |
| ITF M25 Poznan | 2023/08/21 13:20 | Marcel Dzielo v Gabriel Matuszewski | 1-6,2-6 |
| ITF M25 Poznan | 2023/08/20 12:00 | Marcel Dzielo v Mikolaj Borkowski | 6-2,6-4 |
| ITF M25 Bielsko Biala | 2023/08/14 07:30 | Matyas Cerny v Marcel Dzielo | 6-0,6-1 |
| ITF M25 Bielsko Biala | 2023/08/13 09:30 | Marcel Dzielo v Nikita Alosha | 6-0,6-0 |
| ITF M25 Lodz | 2023/08/07 10:30 | Pijus Vaitiekunas v Marcel Dzielo | 6-3,6-0 |