Stadium: Court 8 Round: 62 Ground: Clay
| ITF M25 Esch/Alzette | 2023/07/10 14:00 | Stijn Slump v Ruben Hartig | 6-2,6-4 |
| ITF M25 Esch/Alzette | 2023/07/10 08:45 | Ruben Hartig v Victor Bini | 3-6,6-2,10-8 |
| ITF M25 Esch/Alzette | 2023/07/09 09:25 | Can Ayral v Ruben Hartig | 5-7,3-6 |
| ITF M25 Marburg | 2023/07/04 09:25 | Philipp Pavlenko v Ruben Hartig | 6-4,3-6,10-3 |
| ITF M25 Marburg | 2023/07/03 08:00 | Ruben Hartig v Tim Heger | 7-5,1-6,10-8 |
| ITF M15 Kamen | 2023/06/28 14:55 | Ruben Hartig v Mats Rosenkranz | 6-7,2-6 |
| ITF M15 Kamen | 2023/06/26 14:00 | Ruben Hartig v Lukas Janousek | 6-4,6-1 |
| ITF M15 Kamen | 2023/06/26 10:00 | Jack Karlsson Winstrand v Ruben Hartig | 0-6,1-6 |
| ITF M25 Uriage | 2023/07/09 08:00 | Simone Agostini v Serafin Zund | 6-3,7-5 |
| ITF M25 Bourg-en-Bresse | 2023/06/26 12:30 | Adrien Burdet v Serafin Zund | 6-4,6-3 |
| ITF M25 Bourg-en-Bresse | 2023/06/25 12:25 | Bruno Zarlenga v Serafin Zund | 3-6,2-6 |
| ITF M25 Montauban | 2023/06/19 08:30 | Serafin Zund v Nil Regas Luis | 4-6,6-7 |
| ITF M25 Grasse | 2023/06/11 15:05 | Serafin Zund v Joris Moret | 5-7,6-7 |
| ITF M25 Grasse | 2023/06/11 07:25 | Serafin Zund v Carles Rojas | 6-4,6-2 |
| ITF M15 Frascati | 2023/06/04 15:40 | Serafin Zund v Federico Marchetti | 2-6,6-4,2-10 |
| ITF M15 Monastir | 2023/05/14 08:30 | Serafin Zund v Pablo Trochu | 6-7,7-5,7-10 |