Stadium: Court 4 Round: 25 Ground: Clay
| ITF M25 Pardubice | 2023/09/19 08:00 | Jonas P Hartenstein v Postolka, Roman | 4-6,4-6 |
| ITF M25 Pardubice | 2023/09/18 08:00 | Jonas P Hartenstein v Matej Rudolf | 6-1,6-0 |
| Koszalin, Singles Qualifying M-ITF-POL-02A | 2023/09/06 09:25 | Jonas P Hartenstein v Maciej Rajski | 4-6,4-6 |
| ITF M15 Szczawno | 2023/09/01 09:00 | Olaf Pieczkowski v Jonas P Hartenstein | 6-2,6-2 |
| ITF M15 Szczawno | 2023/08/29 12:45 | Mikula, Michal v Jonas P Hartenstein | 1-6,0-6 |
| ITF M25 Marburg | 2023/07/05 09:00 | Alex Rybakov v Jonas P Hartenstein | 6-4,6-0 |
| ITF M25 Marburg | 2023/07/04 08:00 | Jonas P Hartenstein v Martin Benes | 3-6,6-3,10-7 |
| ITF M25 Risskov/Aarhus | 2023/06/15 11:55 | Max Houkes v Jonas P Hartenstein | 6-7,6-4,6-3 |
| Challenger Como | 2023/08/28 12:10 | Maxime Chazal v Moez Echargui | 6-1,6-7,3-6 |
| Challenger - Prague | 2023/08/23 08:00 | Maxime Chazal v Rudolf Molleker | 2-6,2-6 |
| Challenger - Prague | 2023/08/21 12:15 | Marek Gengel v Maxime Chazal | 2-6,2-6 |
| ITF M25 Muttenz | 2023/08/15 14:15 | Mora, Maxime v Maxime Chazal | 6-7,6-1,7-6 |
| Cordenons, Italy | 2023/08/09 09:00 | Matteo Martineau v Maxime Chazal | 6-1,6-3 |
| Cordenons, Italy | 2023/08/07 15:05 | Maxime Chazal v Chun Hsin Tseng | 2-6,6-3,6-4 |
| Luedenscheid, Germany | 2023/07/30 10:30 | Maxime Chazal v Georgii Kravchenko | 2-6,2-6 |
| ITF M25 Telfs | 2023/07/20 08:00 | Buvaysar Gadamauri v Maxime Chazal | 6-4,6-1 |