Stadium: Court 5 Round: 25 Ground: Clay
| ITF M25 Poznan | 2023/08/23 13:45 | Olaf Pieczkowski v Viacheslav Bielinskyi | 6-3,3-6,2-6 |
| ITF M25 Bielsko Biala | 2023/08/18 08:30 | Juan Bautista Torres v Olaf Pieczkowski | 6-3,6-2 |
| ITF M25 Bielsko Biala | 2023/08/17 08:30 | Olaf Pieczkowski v Daniel Siniakov | 7-5,6-2 |
| ITF M25 Bielsko Biala | 2023/08/16 09:00 | Ondrej Horak v Olaf Pieczkowski | 6-3,1-6,0-6 |
| ITF M25 Lodz | 2023/08/10 10:30 | Daniel Paty v Olaf Pieczkowski | 6-3,6-2 |
| ITF M25 Lodz | 2023/08/09 09:20 | Milos Karol v Olaf Pieczkowski | 6-3,2-6,3-6 |
| ITF M25 The Hague | 2023/07/06 12:10 | Eric Vanshelboim v Olaf Pieczkowski | 6-0,6-4 |
| ITF M25 The Hague | 2023/07/04 12:40 | Dax Donders v Olaf Pieczkowski | 6-7,6-4,2-6 |
| ITF M15 Szczawno | 2023/08/28 15:00 | Radovan Michalik v Alan Bojarski | 4-6,4-6 |
| ITF M15 Szczawno | 2023/08/28 10:00 | Alan Bojarski v Peter Nad | 6-2,6-3 |
| ITF M15 Szczawno | 2023/08/27 09:30 | Dimitris Sakellaridis v Alan Bojarski | 1-6,1-6 |
| ITF M25 Poznan | 2023/08/24 13:10 | Yshai Oliel v Alan Bojarski | 6-2,6-4 |
| ITF M25 Poznan | 2023/08/23 08:30 | Vojtech Vlkovsky v Alan Bojarski | 3-6,2-6 |
| ITF M25 Poznan | 2023/08/22 09:00 | Alan Bojarski v Gabriel Matuszewski | 6-4,7-5 |
| ITF M25 Poznan | 2023/08/21 11:00 | Ignacio Novo v Alan Bojarski | 1-6,2-6 |
| ITF M25 Bielsko Biala | 2023/08/16 09:00 | Lukas Rosol v Alan Bojarski | 7-5,6-3 |