Ground: Hardcourt indoor
| ITF Finland F3 | 2017/08/17 08:00 | Karl Friberg v Jonas Eriksson Ziverts | 6-4,6-2 |
| ITF M15 Saarlouis | 2025/06/17 12:22 | Karl Friberg v Jose Pereira | 4-6,4-6 |
| ITF M25 Varnamo | 2025/06/11 12:00 | Karl Friberg v David Jorda Sanchis | 5-7,6-7 |
| ITF M25 Varnamo | 2024/05/07 11:35 | Karl Friberg v Giovanni Calvano | 6-3,4-6,3-6 |
| Davis Cup | 2024/02/02 16:00 | Karl Friberg v Thiago Monteiro | 3-6,6-7 |
| ITF M15 Manacor | 2024/01/27 10:00 | Karl Friberg v Ryan Nijboer | 4-6,2-6 |
| ITF M15 Manacor | 2024/01/26 10:00 | Karl Friberg v Michiel de Krom | 7-6,6-3 |
| ITF M15 Manacor | 2024/01/25 14:30 | Karl Friberg v Kristjan Tamm | 6-1,1-6,6-3 |
| ITF M15 Manacor | 2024/01/24 09:30 | Karl Friberg v Hayato Matsuoka | 7-6,5-7,6-2 |
| ITF M25 Ystad | 2023/08/17 08:45 | Jonas Eriksson Ziverts v Stijn Pel | 2-6,4-6 |
| ITF M25 Ystad | 2023/08/16 11:45 | Saba George Nanobashvili v Jonas Eriksson Ziverts | 4-6,2-6 |
| ITF M15 Irvine | 2023/06/28 17:00 | Jonas Eriksson Ziverts v Christopher Papa | 5-7,3-6 |
| ITF M15 Irvine | 2023/06/27 17:00 | Jonas Eriksson Ziverts v Joseph Corse | 6-4,7-6 |
| ITF M15 Irvine | 2023/06/26 17:00 | Jonas Eriksson Ziverts v Wally Thayne | 7-6,6-4 |
| ITF M15 Los Angeles | 2023/06/24 00:55 | Jonas Eriksson Ziverts v Alafia Ayeni | 1-6,4-6 |
| ITF M15 Los Angeles | 2023/06/22 18:00 | Nicholas Godsick v Jonas Eriksson Ziverts | 4-6,2-6 |
| ITF M15 Los Angeles | 2023/06/21 19:35 | Enzo Wallart v Jonas Eriksson Ziverts | 2-6,6-7 |