Stadium: Court 2 Round: 25 Ground: Hardcourt indoor
| ITF M15 Villers Les Nancy | 2023/10/16 15:30 | Daniel De Jonge v Karlo Cubelic | 2-6,3-6 |
| ITF M15 Villers Les Nancy | 2023/10/16 09:00 | Nicolas Ifi v Karlo Cubelic | 7-5,1-6,4-10 |
| 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 Forbach | 2023/09/26 07:00 | Arthur Nagel v Adrian Oetzbach | 1-6,1-6 |
| ITF M25 Plaisir | 2023/09/13 13:30 | Adrien Gobat v Arthur Nagel | 6-4,6-2 |
| ITF M25 Plaisir | 2023/09/11 15:15 | Arthur Nagel v Arsene Pougault | 6-0,6-4 |
| ITF M25 Plaisir | 2023/09/11 10:25 | Arthur Nagel v Lyold O Ondo | 6-0,6-3 |
| ITF M15 Uberlingen | 2023/08/19 10:00 | Arthur Nagel v Jakob Schnaitter | 2-6,4-6 |
| ITF M15 Uberlingen | 2023/08/18 11:30 | Arthur Nagel v Adrian Oetzbach | 6-1,6-4 |
| ITF M15 Uberlingen | 2023/08/17 10:50 | Arthur Nagel v Tim Heger | 7-6,6-4 |
| ITF M15 Uberlingen | 2023/08/16 09:40 | Christoph Negritu v Arthur Nagel | 6-7,5-7 |