Stadium: Court 2 Round: 54 Ground: Hardcourt indoor
| ITF M15 Frederiksberg | 2021/08/03 10:05 | Sebastian Prechtel v Karl Friberg | 6-1,6-1 |
| ITF M15 Vejle | 2021/07/30 13:00 | Ergi Kirkin v Karl Friberg | 6-3,6-0 |
| ITF M15 Vejle | 2021/07/30 07:55 | Karl Friberg v Vasil Kirkov | 6-2,7-6 |
| ITF M15 Vejle | 2021/07/28 07:55 | Tommaso Compagnucci v Karl Friberg | 4-6,7-5,4-6 |
| ITF M15 Helsinki | 2021/06/05 07:00 | Karl Friberg v Kyrian Jacquet | 5-7,1-6 |
| ITF M15 Helsinki | 2021/06/04 10:50 | Jaimee Floyd Angele v Karl Friberg | 5-7,6-4,3-6 |
| ITF M15 Helsinki | 2021/06/03 09:30 | Sean Cuenin v Karl Friberg | 4-6,4-6 |
| ITF M15 Helsinki | 2021/06/02 08:15 | Karl Friberg v Cristian Rodriguez | 7-6,2-6,6-4 |
| ITF M15 Frederiksberg | 2021/08/01 08:00 | Felipe Mikkelsen v Jordi Walder | 3-6,6-2,4-10 |
| ITF M15 Vejle | 2021/07/25 11:00 | Felipe Mikkelsen v Elmer Moller | 1-6,6-7 |
| ITF M15 Shymkent | 2021/04/14 05:35 | Felipe Mikkelsen v Damien Wenger | 0-6,0-6 |
| ITF M15 Shymkent | 2021/04/13 06:50 | Alexander Chernomaz v Felipe Mikkelsen | 1-6,3-6 |
| ITF M15 Shymkent | 2021/04/12 03:55 | Felipe Mikkelsen v Ivan Zaytsev | 6-3,6-1 |
| ITF M15 Shymkent | 2021/04/05 04:55 | Jack Gibbens v Felipe Mikkelsen | 6-4,6-4 |