Stadium: Court 2 Round: 28 Ground: Hardcourt outdoor
| ITF M15 Vaasa | 2023/06/09 11:20 | Karl Friberg v Leonardo Rossi | 6-4,6-7,7-6 |
| ITF M15 Vaasa | 2023/06/08 09:15 | Karl Friberg v Nico Hornitschek | 6-3,6-3 |
| ITF M15 Vaasa | 2023/06/07 09:50 | Karl Friberg v Lewie Lane | 7-5,6-3 |
| Challenger Troisdorf | 2023/06/01 13:00 | Karl Friberg v Oleksii Krutykh | 6-1,1-6,4-6 |
| Challenger Troisdorf | 2023/05/30 16:25 | Filip Misolic v Karl Friberg | 5-7,6-4,4-6 |
| Challenger Troisdorf | 2023/05/29 10:45 | Jose Pereira v Karl Friberg | 6-4,4-6,6-3 |
| Challenger Troisdorf | 2023/05/28 12:45 | Kenny de Schepper v Karl Friberg | 2-6,6-1,1-6 |
| ITF M15 Kalmar | 2023/05/18 10:25 | Karl Friberg v Alexander Blockx | 4-6,4-6 |
| ITF M15 Vaasa | 2023/06/09 11:10 | Tom Gentzsch v Nicolas Kobelt | 6-3,6-7,6-1 |
| ITF M15 Vaasa | 2023/06/08 08:00 | Tom Gentzsch v Siim Troost | 6-3,6-3 |
| ITF M15 Vaasa | 2023/06/07 08:45 | Tom Gentzsch v Gabriele Moghini | 7-6,6-3 |
| ITF M15 Constanta | 2023/06/01 10:10 | Tom Gentzsch v Elmer Moller | 0-6,6-3,3-6 |
| ITF M15 Constanta | 2023/05/31 11:40 | Tom Gentzsch v Filip Gabriel Bara | 6-3,6-2 |
| ITF M25 Most | 2023/05/24 07:55 | Timo Stodder v Tom Gentzsch | 6-2,6-2 |
| ITF M25 Most | 2023/05/23 09:35 | Tom Gentzsch v Victor Sklenka | 6-3,6-3 |
| ITF M25 Most | 2023/05/22 08:00 | Tom Gentzsch v Przemyslaw Michocki | 6-1,7-5 |