Stadium: Court 3 Round: 25 Ground: Carpet indoor
| ITF Germany F15 | 2018/10/11 15:25 | Stefan Seifert v Karlo Cubelic | 6-4,6-7,6-2 |
| ITF M15 Olomouc | 2019/10/16 09:20 | Robert Rumler v Karlo Cubelic | 4-6,6-4,6-1 |
| ITF M15 Bad Salzdetfurth | 2019/10/08 15:30 | Michal Konecny v Karlo Cubelic | 6-1,7-6 |
| ITF M15 Cancun | 2019/09/25 16:00 | Adam El Mihdawy v Karlo Cubelic | 6-3,6-4 |
| ITF M15 Cancun | 2019/09/19 15:50 | Karlo Cubelic v Adam El Mihdawy | 1-6,6-3,3-6 |
| ITF M15 Cancun | 2019/09/12 14:30 | Karlo Cubelic v Jorge Panta | 7-5,1-6,2-6 |
| ITF M15 Cancun | 2019/09/10 16:05 | Hillel Rousseau v Karlo Cubelic | 6-3,6-7,1-6 |
| ITF M15 Tabarka | 2019/08/21 08:00 | Karlo Cubelic v Franco Feitt | 6-7,2-6 |
| ITF M15 Tabarka | 2019/08/16 08:00 | Karlo Cubelic v Lorenzo Bocchi | 1-6,4-6 |
| ITF M15 Bad Salzdetfurth | 2019/10/13 09:00 | Stefan Seifert v Jan Choinski | 3-6,1-6 |
| ITF M15 Bad Salzdetfurth | 2019/10/12 10:35 | Stefan Seifert v Justin Eleveld | 6-3,7-6 |
| ITF M15 Bad Salzdetfurth | 2019/10/11 11:50 | Marc-Andrea Huesler v Stefan Seifert | 2-6,3-6 |
| ITF M15 Bad Salzdetfurth | 2019/10/10 11:10 | Stefan Seifert v Daniel Altmaier | 6-4,7-5 |
| ITF M15 Bad Salzdetfurth | 2019/10/09 11:40 | Petr Michnev v Stefan Seifert | 4-6,6-7 |
| ITF M15 Forbach | 2019/09/28 13:30 | Harold Mayot v Stefan Seifert | 6-3,6-4 |
| ITF M15 Forbach | 2019/09/27 13:20 | Stefan Seifert v Arthur Bouquier | 6-3,6-1 |
| ITF M15 Forbach | 2019/09/26 08:30 | Albano Olivetti v Stefan Seifert | 4-6,6-7 |