| ITF - M15 - Antalya | 2019/11/03 07:00 | Luca Gelhardt v Sabit Suntic | 6-2,6-4 |
| ITF - M15 - Antalya | 2019/10/28 07:00 | Luca Gelhardt v Mate Voros | 5-7,7-5,6-10 |
| ITF - M15 - Antalya | 2019/10/27 07:00 | Luca Gelhardt v Robert Ziganshin | 6-1,6-2 |
| ITF M15 Burgas | 2019/10/10 08:50 | Marko Tepavac v Luca Gelhardt | 6-0,7-5 |
| ITF M15 Burgas | 2019/10/09 09:00 | Luca Gelhardt v Simeon Terziev | 6-2,7-6 |
| ITF - M15 - Antalya | 2019/10/02 10:30 | Luca Gelhardt v Yanki Erel | 2-6,6-0,2-6 |
| ITF - M15 - Antalya | 2019/09/25 07:30 | Luca Gelhardt v Dimitar Kuzmanov | 1-6,2-6 |
| ITF - M15 - Antalya | 2019/09/19 08:55 | Michael Vrbensky v Luca Gelhardt | 4-6,6-2,6-0 |
| ITF - M15 - Antalya | 2019/11/03 09:00 | Ruben Busch v Artsiom Dabryian | 6-4,2-6,10-8 |
| ITF - M15 - Antalya | 2019/10/27 09:00 | Ruben Busch v Anze Arh | 1-6,2-6 |
| ITF - M15 Vigo | 2019/08/12 08:30 | Ruben Busch v Joan B B Isern | 6-7,0-6 |
| ITF - M15 Telavi | 2019/07/29 06:00 | Cengiz Aksu v Ruben Busch | 6-1,6-2 |
| ITF - M15 Telavi | 2019/07/22 08:00 | Michal Mikula v Ruben Busch | 6-1,6-4 |
| ITF - M15 Telavi | 2019/07/15 06:00 | Ruben Busch v Viktor Nikitin | 2-6,3-6 |
| ITF - M15 - Antalya | 2019/03/11 07:15 | Nitin Kumar Sinha v Ruben Busch | 7-6,6-0 |
| ITF - M15 - Antalya | 2019/03/04 08:00 | Mircea-Alexandru Jecan v Ruben Busch | 6-0,6-0 |