Stadium: Court 2 - Center Round: 25 Ground: Clay
| Challenger Liberec | 2017/08/04 14:30 | Jahn, Jeremy v Ojeda Lara, Ricardo | 6-7,4-6 |
| Challenger Liberec | 2017/08/03 10:00 | Juan Pablo Ficovich v Jahn, Jeremy | 3-6,4-6 |
| Challenger Liberec | 2017/08/01 08:30 | Zdenek Kolar v Jahn, Jeremy | 3-6,6-4,6-7 |
| Challenger - Prague | 2017/07/27 10:30 | Martin, Andrej v Jahn, Jeremy | 7-5,2-6,6-4 |
| Germany F8, Singles | 2017/07/22 11:10 | Jahn, Jeremy v Jan Choinski | 5-7,2-6 |
| Germany F8, Singles | 2017/07/21 11:00 | Jahn, Jeremy v Elmar Ejupovic | 6-1,7-5 |
| Germany F8, Singles | 2017/07/20 10:30 | Jahn, Jeremy v Neuchrist, Maximilian | 6-2,3-6,7-6 |
| Germany F8, Singles | 2017/07/19 11:00 | Jahn, Jeremy v Franco Agamenone | 6-1,3-6,6-1 |
| ITF Latvia F1 | 2017/07/31 09:25 | Kishi, Ryota v Podzus, Martins | 2-6,2-6 |
| ITF Estonia F1 | 2017/07/25 09:30 | Kishi, Ryota v Brydolf, Patrik | 6-1,6-7,1-6 |
| ITF Lithuania F1 | 2017/07/19 09:00 | Slobodchikov, Ronald v Kishi, Ryota | 6-2,6-2 |
| ITF Lithuania F1 | 2017/07/17 14:50 | Kishi, Ryota v Tadas Babelis | 4-6,6-4,7-5 |
| ITF Guam F1 | 2017/06/21 02:15 | Kishi, Ryota v Kwon, OH-Hee | 5-7,2-6 |
| ITF Japan F8 | 2017/06/14 05:50 | Kishi, Ryota v Watanuki, Keisuke | 0-6,1-6 |
| ITF Japan F7 | 2017/06/06 04:45 | Kishi, Ryota v Katayama, Sho | 2-6,2-6 |
| ITF Japan F6 | 2017/05/29 04:20 | Kishi, Ryota v Kikuchi, Gengo | 7-6,3-6,2-6 |