Stadium: Court 10 Round: 25 Ground: Clay
| ITF M15 Vejle | 2021/07/28 11:50 | Sebastian Prechtel v Guy Den Ouden | 2-6,2-6 |
| ITF M15 L'Aquila | 2021/07/15 07:00 | Luciano Darderi v Sebastian Prechtel | 6-7,6-3,6-2 |
| ITF M15 L'Aquila | 2021/07/14 08:00 | Sebastian Prechtel v Alessandro Procopio | 6-2,6-4 |
| ITF M25 Velenje | 2021/07/08 08:00 | Sebastian Prechtel v Gonzalo Lama | 4-6,1-6 |
| ITF M25 Velenje | 2021/07/07 10:45 | Sebastian Prechtel v Nemanja Malesevic | 6-3,6-3 |
| ITF M15 Sarajevo | 2021/06/02 09:00 | Duje Kekez v Sebastian Prechtel | 6-1,6-1 |
| ITF M25 Kiseljak | 2021/05/27 12:00 | Zsombor Piros v Sebastian Prechtel | 6-3,6-4 |
| ITF M25 Kiseljak | 2021/05/25 13:05 | Sebastian Prechtel v Duje Kekez | 3-6,6-3,6-4 |
| 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 Antalya | 2021/05/19 09:55 | Karl Friberg v Nick Hardt | 1-6,1-6 |