Stadium: Court 8 Round: 25 Ground: Hardcourt indoor
| ITF Sweden F2 | 2017/05/17 08:15 | Jonathan Mridha v Jeremy Jahn | 1-6,7-6,7-6 |
| 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 |
| Challenger Szczecin | 2019/09/11 08:00 | Rudolf Molleker v Jeremy Jahn | 4-6,3-6 |
| Challenger Szczecin | 2019/09/10 14:00 | Vit Kopriva v Jeremy Jahn | 5-7,4-6 |
| ITF M25 La Marsa | 2019/09/06 10:00 | Bruno Santanna v Jeremy Jahn | 6-1,6-2 |
| ITF M15 Oberhaching | 2020/02/20 10:50 | Jonathan Mridha v Timo Stodder | 6-3,4-6,1-6 |
| ITF M15 Oberhaching | 2020/02/19 13:55 | Jonathan Mridha v Paul Woerner | 6-1,6-3 |
| ITF M25 Barnstaple | 2020/02/12 09:55 | Henry Patten v Jonathan Mridha | 6-1,7-6 |
| ITF M25 Barnstaple | 2020/02/11 11:10 | Jonathan Mridha v Petros Chrysochos | 6-1,6-3 |
| ITF M15 Veigy-Foncenex | 2020/01/28 09:00 | Elmar Ejupovic v Jonathan Mridha | 6-2,6-1 |
| ITF M15 Doha | 2019/12/20 12:00 | Zizou Bergs v Jonathan Mridha | 6-4,6-4 |
| ITF M15 Doha | 2019/12/19 10:20 | George Tsivadze v Jonathan Mridha | 6-4,0-6,1-6 |
| ITF M15 Doha | 2019/12/18 13:55 | Rayane Alami v Jonathan Mridha | 1-6,2-6 |