Head to Head
| ITF Germany F8 | 2017/07/20 14:10 | Julian Lenz v Jan Choinski | 7-5,6-7,0-6 |
Home History
| ITF Germany F10 | 2017/08/09 12:20 | Jan Choinski v Jonas Luetjen | 6-4,6-3 |
| ITF Germany F10 | 2017/08/08 13:15 | Jan Choinski v Jannis Kahlke | 3-6,6-2,6-2 |
| ITF Germany F9 | 2017/08/05 13:00 | Daniel Dutra Da Silva v Jan Choinski | 4-6,6-7 |
| ITF Germany F9 | 2017/08/03 11:20 | Jan Choinski v Ugo Humbert | 6-2,6-2 |
| ITF Germany F9 | 2017/08/02 11:40 | Jan Choinski v Julian Onken | 6-0,6-1 |
| ITF Germany F9 | 2017/08/01 13:00 | Jan Choinski v Bastian Wagner | 6-3,6-2 |
| ITF Germany F8 | 2017/07/23 11:00 | Jan Choinski v Jurgen Zopp | 3-6,2-6 |
| ITF Germany F8 | 2017/07/22 11:10 | Jeremy Jahn v Jan Choinski | 5-7,2-6 |
Away History
| ITF Germany F10 | 2017/08/09 14:30 | Kai Wehnelt v Julian Lenz | 3-6,3-6 |
| ITF Germany F10 | 2017/08/08 14:20 | Julian Lenz v Sebastian Fanselow | 7-5,3-6,6-4 |
| Challenger Liberec Qual | 2017/07/29 10:00 | Julian Lenz v Juan Pablo Ficovich | 6-4,3-6,2-6 |
| ITF Germany F8 | 2017/07/20 14:10 | Julian Lenz v Jan Choinski | 7-5,6-7,0-6 |
| ITF Germany F8 | 2017/07/19 15:30 | Matthew Dellavedova v Julian Lenz | 3-6,4-6 |
| Challenger Marburg | 2017/07/03 15:30 | Cedrik-Marcel Stebe v Julian Lenz | 6-3,7-6 |
| Challenger Lisbon Qual | 2017/06/12 10:00 | Julian Lenz v Dragos Dima | 4-6,3-6 |
| Challenger Lisbon Qual | 2017/06/11 10:00 | Danilo Petrovic v Julian Lenz | 6-7,6-4,3-6 |