Stadium: Court 3 Round: 54 Ground: Clay
| ITF M15 Danderyd | 2023/09/18 10:00 | Michael Shaw v Jan Simonsson | 6-3,6-3 |
| ITF M25 Ystad | 2023/08/14 10:55 | Oskar Jansson v Jan Simonsson | 6-4,6-4 |
| ITF M25 Roda de Bara | 2023/07/09 09:00 | Jan Simonsson v Inaki Cabrera Bello | 1-6,1-6 |
| ITF M25 Risskov/Aarhus | 2023/06/12 08:00 | Jan Simonsson v Stepan Pecak | 7-5,2-6,9-11 |
| ITF M25 Risskov/Aarhus | 2023/06/11 09:25 | Patric Prinoth v Jan Simonsson | 7-6,4-6,10-12 |
| ITF M15 Kalmar | 2023/05/16 12:00 | Jan Simonsson v Saba George Nanobashvili | 1-6,3-6 |
| ITF M15 Kalmar | 2023/05/15 11:10 | Kenzo K Larsson v Jan Simonsson | 2-6,3-6 |
| ITF M25 Varnamo | 2023/05/09 10:15 | Jan Simonsson v Erik Grevelius | 4-6,2-6 |
| ITF M25 Risskov/Aarhus | 2023/06/12 08:00 | Lewie Lane v Nikolaj Katic | 6-1,7-6 |
| ITF M25 Risskov/Aarhus | 2023/06/11 08:00 | Gustav Theilgaard v Nikolaj Katic | 3-6,2-6 |
| ITF M15 Kalmar | 2023/05/15 10:30 | Olle Noltorp v Nikolaj Katic | 7-6,6-0 |
| UTR Pro Copenhagen | 2023/02/16 07:32 | Nikolaj Katic v Artem Podorozhnyi | 3-6,0-0 |
| UTR Pro Copenhagen | 2023/02/15 10:00 | Nikolaj Katic v Yanais Laurent | 3-6,1-6 |
| UTR Pro Copenhagen | 2023/02/14 11:30 | Nikolaj Katic v Meethre Barot | 3-6,3-6 |
| UTR Pro Copenhagen | 2023/02/13 11:30 | Nikolaj Katic v Nazim Makhlouf | 1-6,4-6 |
| ITF M15 Danderyd | 2022/09/20 09:25 | Filip Stidell v Nikolaj Katic | 6-3,6-3 |