Stadium: Court 3 Round: 62 Ground: Hardcourt outdoor
| ITF M25 Monastir | 2023/09/03 08:00 | Lucian Mischker v Anthony Popyrin | 7-6,3-6,11-9 |
| ITF M15 Monastir | 2023/08/27 08:00 | Lucian Mischker v Sam Bird | 2-6,3-6 |
| ITF M15 Metzingen | 2023/07/23 07:30 | Rudy Ceccon v Lucian Mischker | 6-1,6-0 |
| 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 |
| ITF M15 Eupen | 2023/08/07 08:00 | Felix Mischker v Raphael Calzi | 7-6,6-4 |
| ITF M15 Xativa | 2023/07/30 15:00 | Felix Mischker v Sergio Callejon Hernando | 6-7,1-6 |
| ITF M15 Metzingen | 2023/07/23 14:00 | Felix Mischker v Stepan Mruzek | 6-1,2-6,5-10 |
| ITF M25 Castelo Branco | 2023/07/19 17:00 | Martyn Pawelski v Felix Mischker | 6-4,6-4 |
| ITF M25 Santa Margherita | 2023/05/01 08:00 | Rocco Piatti v Felix Mischker | 6-1,6-2 |