Stadium: Court 3 Round: 26 Ground: Clay
| ITF M15 Nyiregyhaza | 2023/06/07 11:00 | Luca Wiedenmann v Karol Filar | 6-2,6-2 |
| ITF M15 Nyiregyhaza | 2023/06/05 13:30 | Sean Hess v Karol Filar | 6-1,3-6,13-15 |
| ITF M15 Nyiregyhaza | 2023/06/05 09:30 | Karol Filar v Benjamin Denis Alarcon | 6-0,6-3 |
| ITF M15 Kursumlijska Banja | 2023/04/24 10:35 | Sergei Pogosian v Karol Filar | 7-5,6-3 |
| ITF M15 Kursumlijska Banja | 2023/04/23 09:00 | Karol Filar v Dmitrii Vasilev | 6-1,4-6,12-10 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/02 11:40 | Philip Bachmaier v Karol Filar | 6-2,6-3 |
| ITF M25 Grodzisk Mazowiecki | 2021/08/01 16:55 | Karol Filar v Bartlomiej Andrzejczak | 6-2,6-2 |
| ITF M15 Kamen | 2023/06/26 10:00 | Jack Karlsson Winstrand v Ruben Hartig | 0-6,1-6 |
| ITF M25 Risskov/Aarhus | 2023/06/14 08:30 | Max Houkes v Jack Karlsson Winstrand | 7-5,6-2 |
| ITF M15 Vaasa | 2023/06/08 12:25 | Jack Karlsson Winstrand v Nicolas Kobelt | 2-6,6-4,3-6 |
| ITF M15 Vaasa | 2023/06/07 10:30 | Jack Karlsson Winstrand v Vesa Ahti | 4-6,6-3,6-2 |
| ITF M15 Kalmar | 2023/05/17 09:40 | Karl Friberg v Jack Karlsson Winstrand | 6-3,6-0 |
| ITF M25 Varnamo | 2023/05/10 12:10 | Jack Karlsson Winstrand v Jay Clarke | 2-6,2-6 |
| ITF M25 Varnamo | 2023/05/09 08:15 | Jack Karlsson Winstrand v Rafael Ymer | 6-2,7-5 |
| ITF M25 Varnamo | 2023/05/08 10:25 | Jack Karlsson Winstrand v Eliot Nobel | 6-1,6-2 |