Stadium: Court 1 Round: 62 Ground: Clay
| Challenger Salzburg | 2021/07/06 15:00 | Aichhorn, Jakob v Jiri Lehecka | 4-6,3-6 |
| ITF M15 Anif | 2020/08/26 10:00 | Aichhorn, Jakob v Enrico Dalla Valle | 2-6,2-6 |
| Vogau, Singles Qualifying M-ITF-AUT-04A | 2020/08/16 12:00 | Igor Sijsling v Aichhorn, Jakob | 6-1,6-1 |
| Austrian Tennis Championship | 2020/07/14 07:30 | Neil Oberleitner v Aichhorn, Jakob | 6-4,6-3 |
| Austrian Tennis Championship | 2020/07/13 07:30 | Kris Krawcewicz v Aichhorn, Jakob | 3-6,2-6 |
| ITF - M15 Porec | 2020/03/10 09:00 | Ocleppo, Julian v Aichhorn, Jakob | 6-0,6-3 |
| ITF - M15 Porec | 2020/03/09 10:15 | Vlasceanu, Eduard v Aichhorn, Jakob | 2-6,5-7 |
| ITF - M15 Porec | 2020/03/08 08:00 | Veselic, Luka v Aichhorn, Jakob | 1-6,2-6 |