Stadium: Municipio Tavira Round: 62 Ground: Hardcourt outdoor
| ITF M15 Koszalin | 2023/09/04 07:30 | Federico Marchetti v Mateusz Cislo | 6-0,7-5 |
| ITF M15 Szczawno | 2023/08/28 10:00 | Mateusz Cislo v Maxime Dubouch | 0-6,6-7 |
| ITF M15 Szczawno | 2023/08/27 15:00 | Mateusz Cislo v Mircea Mortasifu | 7-6,6-1 |
| ITF M25 Poznan | 2023/08/21 11:30 | Mateusz Cislo v Pijus Vaitiekunas | 4-6,1-6 |
| ITF M25 Poznan | 2023/08/20 10:30 | Mateusz Cislo v James Beaven | 6-4,6-3 |
| ITF M25 Bielsko Biala | 2023/08/13 09:30 | Marcel Politowicz v Mateusz Cislo | 6-7,6-1,10-4 |
| ITF M25 Lodz | 2023/08/07 07:30 | Filip Pieczonka v Mateusz Cislo | 6-0,6-1 |
| ITF M15 Wroclaw | 2023/06/25 09:00 | Mariano Tammaro v Mateusz Cislo | 6-1,6-3 |
| ITF M25 Monastir | 2023/09/14 11:00 | Andres Martin v Felix Mischker | 6-3,7-5 |
| ITF M25 Monastir | 2023/09/13 10:15 | Felix Mischker v Matteo Fondriest | 7-5,6-4 |
| ITF M25 Monastir | 2023/09/11 13:45 | Max Benaim v Felix Mischker | 2-6,3-6 |
| ITF M25 Monastir | 2023/09/11 09:20 | Maxwell Weishan v Felix Mischker | 5-7,3-6 |
| ITF M25 Monastir | 2023/09/04 15:30 | Isaac Nortey v Felix Mischker | 7-6,3-6,10-7 |
| ITF M15 Monastir | 2023/08/27 08:00 | Aaron Gil Garcia v Felix Mischker | 6-4,7-6 |
| ITF M15 Eupen | 2023/08/08 14:00 | Stijn Slump v Felix Mischker | 6-3,6-1 |
| ITF M15 Eupen | 2023/08/08 08:00 | Ruben Hartig v Felix Mischker | 6-4,6-7,7-10 |