Stadion: Court 3 Round: 44 Ground: Clay
| Tennis Point Exhibition Series | 2020/07/18 13:15 | Igor Sijsling v Daniel Vishnick | 6-0,6-2 |
| Tennis Point Exhibition Series | 2020/07/17 17:00 | Igor Sijsling v Florian Broska | 6-4,5-7,6-3 |
| ITF - M25 - Sunderland | 2020/03/01 12:40 | Jack Draper v Igor Sijsling | 6-2,6-0 |
| ITF - M25 - Sunderland | 2020/02/29 10:25 | Igor Sijsling v Jesper De Jong | 6-2,1-6,6-2 |
| ITF - M25 - Sunderland | 2020/02/28 10:00 | Mark Whitehouse v Igor Sijsling | 5-7,5-7 |
| ITF - M25 - Sunderland | 2020/02/27 10:00 | Aidan Mchugh v Igor Sijsling | 2-6,5-7 |
| ITF - M25 - Sunderland | 2020/02/25 11:30 | Evan Hoyt v Igor Sijsling | 2-6,5-7 |
| Challenger - Koblenz | 2020/02/18 09:00 | Kacper Zuk v Igor Sijsling | 6-4,3-6,6-7 |
| Österreich - Tennis-Staatsmeisterschaften | 2020/07/14 07:30 | Neil Oberleitner v Jakob Aichhorn | 6-4,6-3 |
| Österreich - Tennis-Staatsmeisterschaften | 2020/07/13 07:30 | Kris Krawcewicz v Jakob Aichhorn | 3-6,2-6 |
| ITF - M15 - Porec | 2020/03/10 09:00 | Julian Ocleppo v Jakob Aichhorn | 6-0,6-3 |
| ITF - M15 - Porec | 2020/03/09 10:15 | Eduard Vlasceanu v Jakob Aichhorn | 2-6,5-7 |
| ITF - M15 - Porec | 2020/03/08 08:00 | Luka Veselic v Jakob Aichhorn | 1-6,2-6 |
| ITF - M15 - Trnava | 2020/02/26 14:10 | Jakob Aichhorn v Karlis Ozolins | 6-4,6-7,3-6 |
| ITF - M15 - Trnava | 2020/02/25 11:30 | Jakob Aichhorn v Mihailo Popovic | 6-3,6-1 |
| ITF - M15 - Trnava | 2020/02/24 10:30 | Jakob Aichhorn v Michael Gloeckler | 6-3,7-5 |