Stadium: KARISMA Court (1) Round: 25 Ground: Clay
| 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 Ulcinj | 2021/09/02 08:30 | Antonio Massara v Gergely Madarasz | 3-6,1-6 |
| ITF M15 Ulcinj | 2021/09/01 13:40 | Ioannis Xilas v Antonio Massara | 6-3,3-6,3-6 |
| ITF M25 Lesa | 2021/08/25 12:30 | Federico Arnaboldi v Antonio Massara | 6-2,6-2 |
| ITF M15 Pescara | 2021/08/18 12:10 | Antonio Massara v Riccardo Balzerani | 4-6,3-6 |
| ITF M15 Monastir | 2021/08/05 07:30 | Antonio Massara v Luca Potenza | 6-4,1-6,3-6 |
| ITF M15 Monastir | 2021/07/27 08:00 | Antonio Massara v Rishab Agarwal | 6-4,2-6,4-6 |
| ITF M25 Casinalbo | 2021/07/06 07:30 | Antonio Massara v Alessandro Ragazzi | 3-6,5-7 |
| ITF M15 Antalya | 2021/05/18 07:00 | Cezar Cretu v Antonio Massara | 3-6,6-3,10-6 |