Stadium: C1 - P&E Fastigheter Round: 25 Ground: Clay
| ITF - M25 Varnamo | 2023/05/10 11:00 | Karl Friberg v Andrea Gola | 4-6,3-6 |
| ITF - M25 Nottingham | 2023/05/02 09:00 | Alfredo Perez v Karl Friberg | 6-3,6-2 |
| Challenger - Ostrava | 2023/04/24 09:50 | Guido Andreozzi v Karl Friberg | 6-3,6-3 |
| Challenger - Ostrava | 2023/04/23 12:50 | Robert Galloway v Karl Friberg | 6-7,4-6 |
| ITF - M25 Nottingham | 2023/04/21 09:00 | Daniel Little v Karl Friberg | 6-3,6-2 |
| ITF - M25 Nottingham | 2023/04/20 10:55 | Neil Oberleitner v Karl Friberg | 6-7,6-2,5-7 |
| ITF - M25 Nottingham | 2023/04/18 09:00 | Ben Jones v Karl Friberg | 3-6,0-6 |
| ITF - M25 Trnava | 2023/04/02 09:00 | Jakub Mensik v Karl Friberg | 7-6,6-3 |
| 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 |
| ITF - M15 Telde | 2023/04/16 07:00 | Ian Luca Cervantes Tomas v Jack Karlsson Winstrand | 7-6,0-6,10-8 |
| ITF - M15 Telde | 2023/04/09 09:00 | Yannick Penkner v Jack Karlsson Winstrand | 6-3,7-6 |
| ITF - M15 Sharm El Sheikh | 2023/03/21 09:35 | Chukang Wang v Jack Karlsson Winstrand | 6-4,6-3 |
| ITF - M15 Sharm El Sheikh | 2023/03/19 13:00 | Pavlo Rezoglazov v Jack Karlsson Winstrand | 1-6,0-6 |
| ITF - M15 Sharm El Sheikh | 2023/03/13 08:00 | Jack Karlsson Winstrand v Hamish Stewart | 1-6,3-6 |