Stadion: Court 8 Round: 25 Ground: Hardcourt indoor
| ITF - Finnland F4 | 2018/11/13 15:45 | Denis Klok v Karl Friberg | 3-6,1-6 |
| ITF - Estland F1 | 2018/07/18 07:00 | Karl Friberg v Denis Klok | 4-6,6-3,5-7 |
| ITF - M15 - Belgrad | 2019/07/03 11:55 | Denis Klok v Bogdan Pavel | 6-4,4-6,4-6 |
| ITF - M15 - Kaltenkirchen | 2019/06/11 11:00 | James Frawley v Denis Klok | 6-0,2-6,6-1 |
| ITF - M15 - Kaltenkirchen | 2019/06/10 15:00 | Denis Klok v Matthew Dellavedova | 6-2,6-3 |
| ITF - M15 - Kaltenkirchen | 2019/06/10 08:00 | Denis Klok v Benedict Moerl | 6-2,6-0 |
| ITF - M25 - Karlsruhe | 2019/06/04 09:00 | Denis Klok v Justin Roberts | 1-6,1-6 |
| ITF - M25 - Karlsruhe | 2019/06/03 09:00 | Denis Klok v Yan Sabanin | 7-5,7-6 |
| ITF - M15 - Antalya | 2019/05/24 07:45 | Denis Klok v Christopher Heyman | 1-6,6-7 |
| ITF - M15 - Antalya | 2019/05/23 07:15 | Denis Klok v Alexander Ovcharov | 6-1,6-4 |
| ITF - M15 - Den Haag | 2019/07/04 13:10 | Karl Friberg v Matias Zukas | 1-6,1-6 |
| ITF - M15 - Den Haag | 2019/07/03 13:45 | Takanyi Garanganga v Karl Friberg | 4-6,6-4,6-7 |
| ITF - M15 - Alkmaar | 2019/06/26 08:00 | Karl Friberg v Bastian Malla | 2-6,3-6 |
| ITF - M15 - Balatonalmadi | 2019/06/18 10:05 | Karl Friberg v Matyas Fuele | 6-4,3-6,8-10 |
| ITF - M15 - Balatonalmadi | 2019/06/17 10:30 | Karl Friberg v Marcell Bartakovics | 6-1,6-4 |
| ITF - M15 - Irpin | 2019/05/30 09:20 | Karl Friberg v Arnaud Bovy | 2-6,2-6 |
| ITF - M15 - Irpin | 2019/05/29 08:50 | Karl Friberg v Pavel Shumeiko | 6-2,6-1 |
| ITF - M15 - Irpin | 2019/05/28 07:00 | Karl Friberg v Denis Parshutin | 6-1,6-2 |