Stadium: Court 1 Round: 44 Ground: Clay
| Koszalin, Singles Qualifying M-ITF-POL-02A | 2023/09/04 09:00 | Piotr Kusiewicz v Parker, Alexander Carlos | 7-6,6-3 |
| ITF M15 Szczawno | 2023/08/28 17:45 | Piotr Kusiewicz v Matuszewski, Gabriel | 6-4,3-6,5-10 |
| ITF M15 Szczawno | 2023/08/28 09:40 | Piotr Kusiewicz v Marcel Dzielo | 6-1,7-5 |
| 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 바클라노프, 에고르 | 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 |
| Koszalin, Singles Qualifying M-ITF-POL-02A | 2023/09/04 07:30 | Piotr Siekanowicz v 사켈라리디스, 미칼리스 | 7-6,4-6,10-8 |
| ITF M15 Szczawno | 2023/08/27 07:00 | 필라르, 카롤 v Piotr Siekanowicz | 6-4,6-4 |
| ITF M25 Bielsko Biala | 2023/08/14 12:00 | 체르니, 마티아스 v Piotr Siekanowicz | 6-7,6-1,10-6 |
| ITF M25 Bielsko Biala | 2023/08/14 07:30 | Piotr Siekanowicz v 바이스, 토마스 | 6-4,4-6,10-4 |
| ITF M25 Lodz | 2023/08/08 11:05 | 그린코우스키, 피오트르 v Piotr Siekanowicz | 6-4,6-1 |
| ITF M25 Lodz | 2023/08/08 07:30 | Piotr Siekanowicz v Matuszewski, Gabriel | 1-6,7-6,10-6 |
| ITF M25 Lodz | 2023/08/07 10:30 | Piotr Siekanowicz v Jakub Solarski | 6-0,6-2 |