Stadion: Court 2 Round: 54 Ground: Hardcourt indoor
| ITF - M25 - Jönköping | 2021/09/21 12:20 | Evgeny Karlovskiy v Karl Friberg | 6-4,6-1 |
| ITF - M15 - Ulcinj | 2021/09/16 09:50 | Rrezart Cungu v Karl Friberg | 6-1,6-3 |
| ITF - M15 - Ulcinj | 2021/09/14 08:00 | Karl Friberg v Petar Jovanovic | 6-3,6-0 |
| ITF - M15 - Ulcinj | 2021/09/07 10:55 | Karl Friberg v Antonio Massara | 2-6,3-6 |
| 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 - Ulcinj | 2021/09/12 08:00 | Felipe Mikkelsen v Leonardo Rossi | 2-6,1-6 |
| ITF - M15 - Ulcinj | 2021/09/06 13:00 | Daniel Ibragimov v Felipe Mikkelsen | 6-1,5-7,10-2 |
| ITF - M15 - Ulcinj | 2021/09/05 07:30 | Aleksandar Tomas v Felipe Mikkelsen | 2-6,5-7 |
| 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 |