Stadium: Court 3 Round: 27 Ground: Clay
| ITF M15 Huy | 2023/08/24 09:00 | Jans, Jarno v Marc Majdandzic | 7-5,6-2 |
| ITF M15 Huy | 2023/08/23 09:00 | Jans, Jarno v Roland Stuurman | 5-7,6-0,7-6 |
| ITF M15 Eindhoven | 2023/08/01 13:50 | Adrian Oetzbach v Jans, Jarno | 6-1,6-0 |
| Lotto NK Tennis | 2022/12/16 12:00 | Alec Deckers v Jans, Jarno | 7-5,6-1 |
| ITF M25 Monastir | 2022/12/01 08:30 | Skander Mansouri v Jans, Jarno | 6-4,6-4 |
| ITF M25 Monastir | 2022/11/30 08:30 | Nicolas Philibert v Jans, Jarno | 1-6,1-6 |
| ITF - M15 Monastir | 2022/11/27 08:30 | Jans, Jarno v Constantin Bittoun Kouzmine | 1-6,4-6 |
| ITF - M15 Monastir | 2022/11/26 10:00 | Jans, Jarno v Luca Tomasetto | 6-4,6-3 |
| ITF M15 Huy | 2023/08/25 07:30 | Harold Huens v de Bakker, Thiemo | 3-6,1-6 |
| ITF M15 Huy | 2023/08/23 16:15 | de Bakker, Thiemo v Luciano Emanuel Ambrogi | 6-2,7-5 |
| ITF M15 Huy | 2023/08/21 11:45 | de Bakker, Thiemo v Leon Formella | 6-3,6-0 |
| ITF M25 Koksijde | 2023/08/15 12:35 | de Bakker, Thiemo v Mariano Kestelboim | 3-6,3-6 |
| ITF M25 Koksijde | 2023/08/14 09:50 | de Bakker, Thiemo v Giacomo Crisostomo | 6-1,6-2 |
| ITF M25 Koksijde | 2023/08/13 08:00 | de Bakker, Thiemo v Ilian Borlee | 6-3,6-0 |
| ITF M25 The Hague | 2023/07/06 17:00 | de Bakker, Thiemo v Deney Wassermann | 6-7,6-1,4-6 |
| ITF M25 The Hague | 2023/07/05 16:55 | Kyvan Rietkerk v de Bakker, Thiemo | 2-6,2-6 |