Stadium: Court 5 Round: 26 Ground: Clay
| ITF M15 - Antalya | 2021/04/13 07:00 | Jumpei Yamasaki v Karl Friberg | 1-6,2-6 |
| ITF M15 - Antalya | 2021/04/07 07:00 | Shintaro Mochizuki v Karl Friberg | 6-1,7-5 |
| ITF M15 - Sharm El Sheikh | 2021/03/10 09:45 | Karl Friberg v Oscar Jose Gutierrez | 5-7,6-2,4-6 |
| ITF M15 - Sharm El Sheikh | 2021/03/09 07:30 | Karl Friberg v Alexandros Skorilas | 6-2,6-7,10-8 |
| ITF M15 - Sharm El Sheikh | 2021/03/07 07:00 | Karl Friberg v Lorenzo Rottoli | 6-3,3-6,15-13 |
| ITF M15 - Sharm El Sheikh | 2021/03/03 12:25 | Karl Friberg v Gabriele Bosio | 4-6,6-3,4-6 |
| ITF M15 - Sharm El Sheikh | 2021/02/24 14:00 | Karl Friberg v Rio Noguchi | 3-6,1-6 |
| ITF M15 - Antalya | 2021/01/31 10:00 | Timur Kiyamov v Karl Friberg | 4-6,6-4,10-4 |
| ITF M15 - Antalya | 2021/04/13 07:00 | Sandro Kopp v Peter Fajta | 6-2,7-6 |
| ITF M15 - Antalya | 2021/04/07 08:20 | Pablo Llamas Ruiz v Sandro Kopp | 7-5,6-4 |
| ITF M15 - Antalya | 2021/04/06 07:00 | Sandro Kopp v Emil Reinberg | 6-0,6-4 |
| ITF M15 - Antalya | 2021/04/05 07:00 | Sandro Kopp v Sami Ben Abdennibi | 5-7,6-1,10-2 |
| ITF M15 - Antalya | 2021/04/04 06:30 | Sandro Kopp v Leon Benedict | 6-2,6-4 |
| ITF M25 - Biel | 2021/03/29 14:50 | Oscar Moraing v Sandro Kopp | 4-6,6-1,11-9 |
| ITF M15 - Antalya | 2021/02/22 07:00 | Deney Wassermann v Sandro Kopp | 6-3,2-6,10-8 |
| ITF M15 - Antalya | 2021/02/21 06:00 | Umut Akkoyun v Sandro Kopp | 3-6,4-6 |