Stadium: Court 16 Round: 44 Ground: Hardcourt outdoor
| ITF M15 Heraklion | 2023/10/16 07:00 | Piotr Kusiewicz v Benoit Torcq | 6-2,1-6,6-10 |
| ITF M15 Koszalin | 2023/09/06 07:30 | Valerio Perruzza v Piotr Kusiewicz | 6-1,6-4 |
| ITF M15 Koszalin | 2023/09/05 07:30 | Piotr Kusiewicz v Piotr Siekanowicz | 5-7,7-6,8-10 |
| ITF M15 Koszalin | 2023/09/04 09:00 | Piotr Kusiewicz v Alexander C Parker | 7-6,6-3 |
| ITF M15 Szczawno | 2023/08/28 17:45 | Piotr Kusiewicz v Gabriel Matuszewski | 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 Pardubice | 2023/09/18 09:00 | Vojtech Mares v Petr Michnev | 6-7,6-2,6-10 |
| ITF M25 Pardubice | 2023/09/17 08:00 | Jan Jermar v Vojtech Mares | 3-6,4-6 |
| ITF M25 Jablonec Nad Nisou | 2023/08/30 09:30 | Martin Krumich v Vojtech Mares | 3-6,6-4,6-4 |
| ITF M25 Jablonec Nad Nisou | 2023/08/29 10:30 | Vojtech Mares v Henry Lieberman | 6-7,6-4,10-5 |
| ITF M25 Lodz | 2023/08/09 08:00 | Vojtech Mares v Filip Pieczonka | 3-6,1-6 |
| ITF M25 Lodz | 2023/08/08 12:05 | Vojtech Mares v Tomas Vaise | 3-6,7-6,10-8 |
| ITF M25 Lodz | 2023/08/08 07:30 | Edison Ambarzumjan v Vojtech Mares | 4-6,1-6 |
| ITF M25 Lodz | 2023/08/07 10:30 | Vojtech Mares v Breno R Urvaneja | 6-1,6-3 |