Stadium: Court 1 Round: 25 Ground: Clay
| 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 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 Ulcinj | 2021/09/07 08:00 | Juan Pablo Paz v Petar Jovanovic | 7-6,1-6,6-2 |
| ITF M15 Ulcinj | 2021/08/30 07:30 | Tomislav Jotovski v Petar Jovanovic | 6-4,6-3 |
| ITF M15 Novi Sad | 2021/08/02 08:00 | Domagoj Biljesko v Petar Jovanovic | 6-3,6-1 |
| ITF M15 Novi Sad | 2021/08/01 11:15 | Marko Stakusic v Petar Jovanovic | 5-7,3-6 |
| ITF M15 Doboj | 2021/07/12 11:00 | Petar Jovanovic v Carles Hernandez | 6-3,3-6,4-10 |
| ITF M15 Doboj | 2021/07/11 12:30 | Petar Jovanovic v Tadija Radovanovic | 6-3,6-2 |
| Davis Cup | 2021/06/26 07:55 | Petar Jovanovic v Nadir Sargsyan | 6-0,6-2 |
| Davis Cup | 2021/06/24 08:00 | Petar Jovanovic v Elvin Hashimov | 6-1,6-1 |