Stadium: Schoonderbeekbouw Court Round: 19 Ground: Clay
| DTB German Pro Series | 2020/06/12 08:30 | Jeremy Jahn v Nino Ehrenschneider | 4-6,1-6 |
| DTB German Pro Series | 2020/06/11 08:00 | Jeremy Jahn v Marvin Moeller | 6-3,0-6,3-6 |
| ITF M25 Sunderland | 2020/02/26 13:00 | Jeremy Jahn v Jonathan Mridha | 3-6,3-6 |
| Challenger Campinas | 2019/10/01 16:20 | Nicolas Alvarez v Jeremy Jahn | 6-4,6-2 |
| Challenger Biella | 2019/09/18 11:15 | Alejandro Davidovich Fokina v Jeremy Jahn | 7-5,7-5 |
| Challenger Biella | 2019/09/16 14:10 | Jeremy Jahn v Enrico Dalla Valle | 6-3,6-4 |
| Challenger Szczecin | 2019/09/13 12:00 | Albert Ramos-Vinolas v Jeremy Jahn | 7-6,6-2 |
| Challenger Szczecin | 2019/09/12 12:45 | Jeremy Jahn v Gianluca Mager | 6-1,2-6,6-4 |
| ITF M15 LPD Gran Canaria | 2021/04/28 09:55 | Johan Nikles v Marvin Netuschil | 6-3,6-2 |
| ITF M25 Reus | 2021/04/16 08:00 | Shintaro Mochizuki v Johan Nikles | 3-6,6-4,6-4 |
| ITF M25 Reus | 2021/04/15 08:00 | Johan Nikles v Miguel Damas | 6-0,6-1 |
| ITF M25 Reus | 2021/04/13 09:05 | Johan Nikles v Jordi Garcia Mestre | 6-2,6-2 |
| ITF M25 Biel | 2021/03/30 13:10 | Johan Nikles v Dan Added | 2-6,6-3,1-6 |
| Challenger Lugano | 2021/03/22 09:30 | Johan Nikles v Vitaliy Sachko | 2-6,5-7 |
| Challenger Lugano | 2021/03/21 09:00 | Jesper De Jong v Johan Nikles | 6-0,4-6,4-6 |
| Challenger Biella Qual | 2021/03/14 12:40 | Johan Nikles v Jack Sock | 7-6,3-6,1-6 |