Stadium: Court 1 Round: 62 Ground: Clay
| 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 |
| ITF M25 Santa Margherita | 2023/04/30 08:00 | Paolo Emilio Cossu Floris v Felix Mischker | 2-6,1-6 |
| ITF M15 Antalya | 2023/04/09 06:30 | Felix Mischker v Takuya Kumasaka | 5-7,1-6 |
| ITF M15 Antalya | 2023/04/03 13:40 | Felix Mischker v Sean Hess | 1-6,7-5,9-11 |
| ITF M15 Antalya | 2023/04/02 07:00 | Felix Mischker v Samuil Konov | 3-6,6-3,10-6 |
| ITF M15 Heraklion | 2023/03/20 10:30 | Elgin Khoeblal v Felix Mischker | 6-2,7-5 |
| ITF M25 Denia | 2023/07/24 09:00 | Sergio Callejon Hernando v Javier Molino | 5-7,7-6,7-10 |
| ITF M25 Denia | 2023/07/23 08:00 | Samuel Kyjaci v Sergio Callejon Hernando | 1-6,0-6 |
| ITF M25 Bakio | 2023/06/25 13:40 | Marc Saura Moragrega v Sergio Callejon Hernando | 6-4,6-4 |
| ITF M25 Cordoba | 2023/06/05 18:00 | Alejandro Manzanera Pertusa v Sergio Callejon Hernando | 6-3,2-6,10-8 |
| ITF M25 Cordoba | 2023/06/05 08:00 | Sergio Callejon Hernando v David Munoz | 6-0,3-6,10-7 |
| ITF M25 Cordoba | 2023/06/04 12:30 | Sergio Callejon Hernando v Rail Ibragimov | 6-0,6-3 |
| ITF M15 Telde | 2023/04/19 08:00 | Sergio Callejon Hernando v Martin Cuevas | 7-5,3-6,4-6 |
| ITF M15 Telde | 2023/04/17 08:00 | Luis Francisco v Sergio Callejon Hernando | 4-6,3-6 |