Stadium: S+S Court Round: 25 Ground: Clay
| ITF M15 Monastir | 2021/06/23 08:30 | Alexander Donski v Omni Kumar | 1-6,3-6 |
| ITF M15 Monastir | 2021/06/17 11:40 | Alexander Donski v Luca Giacomini | 3-6,3-6 |
| ITF M15 Monastir | 2021/06/15 08:30 | Lucio Carnevalle v Alexander Donski | 2-6,3-6 |
| ITF M15 Heraklion | 2021/06/10 07:30 | Alexander Donski v Yuki Mochizuki | 3-6,4-6 |
| ITF M15 Heraklion | 2021/06/09 11:50 | Alexander Donski v Daniel Little | 1-6,6-3,6-1 |
| ITF M15 Heraklion | 2021/06/03 06:30 | Alexander Donski v Reese Stalder | 3-6,6-3,4-6 |
| ITF M15 Heraklion | 2021/06/01 08:00 | Alexander Donski v Kelsey Stevenson | 6-3,6-2 |
| ITF M15 Monastir | 2021/05/14 08:30 | Omni Kumar v Alexander Donski | 2-6,7-5,6-3 |
| ITF M25 The Hague | 2021/06/29 09:00 | Jeremy Jahn v Javier Barranco Cosano | 2-6,3-6 |
| ITF M25 Alkmaar | 2021/06/23 10:55 | Marvin Moeller v Jeremy Jahn | 6-2,6-0 |
| 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 |