Stadium: Center Court Round: 27 Ground: Carpet indoor
| Challenger Ludwigshafen | 2019/07/02 09:00 | Johannes Haerteis v Julian Lenz | 3-6,7-6,7-6 |
| Challenger Sibiu | 2018/09/16 10:35 | Johannes Haerteis v Julian Lenz | 4-6,4-6 |
| ITF Switzerland F1 | 2018/02/06 12:00 | Johannes Haerteis v Julian Lenz | 6-2,1-6,4-6 |
| ITF Czech Republic F2 | 2017/05/27 11:55 | Julian Lenz v Johannes Haerteis | 6-1,6-4 |
| ITF Germany F10 | 2016/08/11 14:25 | Julian Lenz v Johannes Haerteis | 5-7,6-3,3-6 |