Stadium: Court 4 Round: 19 Ground: Carpet indoor
| ITF M15 Koszalin | 2023/09/06 07:30 | Karlo Cubelic v Lewie Lane | 2-6,3-6 |
| ITF M15 Allershausen | 2023/08/30 08:00 | Karlo Cubelic v Mark Wallner | 6-3,2-6,7-10 |
| ITF M15 Allershausen | 2023/08/29 12:00 | Karlo Cubelic v Stefan Peter Hampe | 4-6,6-2,10-5 |
| ITF M15 Trier | 2023/08/21 15:00 | Karlo Cubelic v Torben Steinorth | 4-6,6-0,6-10 |
| ITF M15 Trier | 2023/08/21 09:30 | Karlo Cubelic v Tim Pauly | 6-1,6-1 |
| Challenger Luedenscheid | 2023/07/30 10:35 | Karlo Cubelic v Marvin Moeller | 3-6,6-3,2-6 |
| ITF M15 Metzingen | 2023/07/24 12:00 | Karlo Cubelic v Rostislav Galfinger | 2-6,4-6 |
| ITF M15 Metzingen | 2023/07/23 07:30 | Karlo Cubelic v Stefan Peter Hampe | 6-3,2-6,10-5 |
| ITF M15 Trier | 2023/08/23 11:00 | David Eichenseher v Jannik Opitz | 6-4,6-7,4-6 |
| ITF M15 Trier | 2023/08/21 12:30 | Nicholas Campbell v David Eichenseher | 6-7,1-6 |
| ITF M15 Trier | 2023/08/21 08:00 | David Eichenseher v Carlo Cataldi | 4-6,6-3,10-6 |
| ITF M15 Uberlingen | 2023/08/14 08:00 | David Eichenseher v Vincent Marysko | 3-6,4-6 |