Estadio: Yonex Court Round: 25 Ground: Clay
| Challenger de Tallahassee | 2019/04/22 14:00 | Benjamin Hassan v Johannes Haerteis | 6-4,6-1 |
| ITF Alemania F11 | 2016/08/18 12:35 | Benjamin Hassan v Johannes Haerteis | 4-6,5-7 |
| Challenger de Meerbusch | 2019/08/13 09:40 | Johannes Haerteis v Eduard Esteve Lobato | 6-4,7-5 |
| Challenger de Augsburgo | 2019/08/06 08:00 | Johannes Haerteis v Louis Wessels | 6-7,5-7 |
| Challenger de Sopot | 2019/07/29 15:15 | Martin Cuevas v Johannes Haerteis | 7-6,6-4 |
| ATP Hamburgo | 2019/07/20 09:30 | Alejandro Davidovich Fokina v Johannes Haerteis | 6-2,6-3 |
| Challenger de Braunschweig | 2019/07/10 11:20 | Johannes Haerteis v Tobias Kamke | 5-7,1-6 |
| Challenger de Braunschweig | 2019/07/09 10:50 | Rudolf Molleker v Johannes Haerteis | 6-3,5-7,1-6 |
| Challenger de Braunschweig | 2019/07/07 14:35 | Cedrik-Marcel Stebe v Johannes Haerteis | 6-3,5-7,4-6 |
| Challenger de Ludwigshafen | 2019/07/03 09:00 | Johannes Haerteis v Yannick Hanfmann | 3-6,3-6 |
| Challenger de Augsburgo | 2019/08/08 09:00 | Benjamin Hassan v Facundo Mena | 6-4,1-6,0-6 |
| Challenger de Augsburgo | 2019/08/06 14:30 | Lukas Rosol v Benjamin Hassan | 4-6,4-6 |
| Challenger de Augsburgo | 2019/08/05 11:05 | Tak Khunn Wang v Benjamin Hassan | 2-6,4-6 |
| Challenger de Tampere | 2019/07/24 09:35 | Kimmer Coppejans v Benjamin Hassan | 6-3,6-3 |
| Challenger de Tampere | 2019/07/22 13:30 | Panu Virtanen v Benjamin Hassan | 6-7,1-6 |
| Challenger de Braunschweig | 2019/07/07 13:35 | Jozef Kovalik v Benjamin Hassan | 6-4,6-7,6-4 |
| Challenger de Ludwigshafen | 2019/07/04 16:00 | Benjamin Hassan v Alex Molcan | 3-6,2-6 |
| Challenger de Ludwigshafen | 2019/07/02 15:00 | Pedro Sousa v Benjamin Hassan | 2-6,2-6 |