Stadium: Center Court Round: 62 Ground: Clay
| ITF M15 Uslar | 2023/07/17 08:00 | Karlo Cubelic v Aaron James Williams | 6-7,6-4,6-10 |
| ITF M25 Kassel | 2023/07/12 11:55 | Hady Habib v Karlo Cubelic | 6-0,6-4 |
| ITF M25 Kassel | 2023/07/11 09:30 | Dominik Recek v Karlo Cubelic | 2-6,1-6 |
| ITF M25 Marburg | 2023/07/05 10:55 | Karlo Cubelic v Louis Wessels | 7-6,4-6,3-6 |
| ITF M25 Marburg | 2023/07/04 07:55 | Tomas Lanik v Karlo Cubelic | 3-6,6-1,7-10 |
| ITF M25 Marburg | 2023/07/03 08:00 | Noah Thurner v Karlo Cubelic | 7-6,3-6,8-10 |
| ITF M15 Kamen | 2023/06/29 09:00 | Karlo Cubelic v Francois Musitelli | 3-6,4-6 |
| ITF M15 Kamen | 2023/06/28 09:00 | Quentin Folliot v Karlo Cubelic | 2-6,2-6 |
| ITF M25 Arlon | 2023/06/26 15:10 | Stefan Peter Hampe v Thorben Sannen | 4-6,5-7 |
| UTR Pro Tennis Series Dallas | 2022/12/22 21:30 | Shunsuke Mitsui v Stefan Peter Hampe | 6-1,0-0 |
| UTR Pro Tennis Series Dallas | 2022/12/21 21:23 | Matthis Ross v Stefan Peter Hampe | 7-6,4-6,3-5 |
| UTR Pro Tennis Series Dallas | 2022/12/19 21:30 | Josh Sheehy v Stefan Peter Hampe | 3-6,6-4,6-6 |
| UTR Pro Tennis Series Dallas | 2022/12/18 21:33 | Stefan Peter Hampe v Lui Maxted | 5-7,3-5 |
| ITF M15 Metzingen | 2022/07/19 14:20 | Stefan Peter Hampe v Sander Jong | 5-7,7-5,3-6 |
| ITF M15 Metzingen | 2022/07/18 12:00 | Stefan Peter Hampe v Pavel Shumeiko | 6-4,6-2 |
| ITF M15 Metzingen | 2022/07/17 14:30 | Rik Muller v Stefan Peter Hampe | 4-6,4-6 |