Stadium: Court 4 Round: 62 Ground: Clay
| ITF M15 Cadolzburg | 2024/01/18 10:00 | Daniel Masur v Stepan Baum | 6-3,6-4 |
| ITF M15 Cadolzburg | 2024/01/16 11:40 | Lasse Poertner v Stepan Baum | 6-3,4-6,1-6 |
| ITF M15 Cadolzburg | 2024/01/15 10:00 | Stepan Baum v Mischa Lanz | 5-7,3-6 |
| ITF M25 Pardubice | 2023/09/19 08:00 | Noel Larwig v Stepan Baum | 0-6,6-3,10-7 |
| ITF M25 Pardubice | 2023/09/17 09:00 | Ondrej Hujo v Stepan Baum | 4-6,0-6 |
| ITF M15 Szczawno | 2023/08/28 10:00 | Stepan Baum v Jonathan Backman | 2-6,6-4,3-10 |
| ITF M15 Trier | 2023/08/25 10:00 | Stepan Baum v Hazem Naw | 3-6,5-7 |
| ITF M15 Trier | 2023/08/24 10:55 | Stepan Baum v Jannik Opitz | 6-2,6-2 |
| ITF M25 Hammamet | 2024/02/12 08:30 | Daniel Bagnolini v Ruben Hartig | 6-3,6-0 |
| ITF M15 Antalya | 2023/12/17 07:00 | Hien Q H Pham v Ruben Hartig | 6-4,7-6 |
| ITF M15 Antalya | 2023/12/10 07:00 | Pablo Roche Alcaya v Ruben Hartig | 7-6,6-3 |
| German Championship | 2023/12/03 16:00 | Sebastian Gampert v Ruben Hartig | 6-2,6-3 |
| ITF M25 Monastir | 2023/11/12 08:00 | Ruben Hartig v Teymuraz Gabashvili | 2-6,0-6 |
| ITF M25 Monastir | 2023/11/06 09:30 | Toby Martin v Ruben Hartig | 6-1,6-1 |
| ITF M25 Monastir | 2023/11/05 08:00 | Ruben Hartig v Nicholas Van Aken | 6-2,6-1 |
| ITF M15 Monastir | 2023/10/23 15:00 | Ruben Hartig v Jaka Protic Zakelj | 1-6,3-6 |