Stadium: Annexe Round: 45 Ground: Hardcourt indoor
| Challenger Eckental | 2018/10/27 12:55 | Viktor Durasovic v Jahn, Jeremy | 6-7,6-3,6-2 |
| Challenger Ismaning | 2018/10/19 12:50 | Gleb Sakharov v Jahn, Jeremy | 6-3,3-6,6-3 |
| Challenger Ismaning | 2018/10/18 11:30 | Jahn, Jeremy v Louis Wessels | 7-6,6-4 |
| Challenger - Barcelone | 2018/10/08 12:05 | Wang, Tak Khunn v Jahn, Jeremy | 6-4,6-4 |
| Challenger - Barcelone | 2018/10/07 15:10 | Jahn, Jeremy v Zizou Bergs | 7-6,6-1 |
| Challenger - Barcelone | 2018/10/07 07:15 | Nerman Fatic v Jahn, Jeremy | 2-6,6-4,1-6 |
| Florence, Italy | 2018/09/29 13:45 | Jahn, Jeremy v Nicola Kuhn | 3-6,6-3,4-6 |
| Challenger Sibiu | 2018/09/18 10:00 | Bolelli, Simone v Jahn, Jeremy | 6-4,6-4 |
| Italie F32, Simples | 2018/10/20 10:00 | Stefano Baldoni v Gigounon, Germain | 6-4,3-6,7-5 |
| Italie F32, Simples | 2018/10/18 14:20 | Mircea-Alexandru Jecan v Gigounon, Germain | 4-6,1-6 |
| Italie F32, Simples | 2018/10/16 14:00 | Obert, Adrian v Gigounon, Germain | 3-6,4-6 |
| ITF Spain F31 | 2018/10/14 08:00 | Nikolas Sanchez Izquierdo v Gigounon, Germain | 7-6,2-6,1-6 |
| ITF Spain F31 | 2018/10/13 09:30 | Gigounon, Germain v Javier Barranco Cosano | 3-6,6-3,7-5 |
| ITF Spain F31 | 2018/10/12 13:20 | Jordan Correia Passos Do Carmo v Gigounon, Germain | 6-7,4-6 |
| ITF Spain F31 | 2018/10/11 09:30 | Johannson-Holm, Jakob v Gigounon, Germain | 2-6,1-6 |
| ITF Spain F31 | 2018/10/10 15:05 | Gabarro, Xavier v Gigounon, Germain | 4-6,5-7 |