| Tennis Point Exhibition Series | 2020/05/31 09:35 | Luca Gelhardt v Johannes Haerteis | 2-6,2-6 |
| DTB German Pro Series | 2020/06/26 12:00 | Max Hans Rehberg v Johannes Haerteis | 3-6,2-6 |
| DTB German Pro Series | 2020/06/25 13:35 | Daniel Masur v Johannes Haerteis | 6-7,6-1,5-7 |
| DTB German Pro Series | 2020/06/24 14:10 | Johannes Haerteis v Max Hans Rehberg | 3-6,2-6 |
| DTB German Pro Series | 2020/06/23 12:00 | Cedrik-Marcel Stebe v Johannes Haerteis | 6-4,6-3 |
| DTB German Pro Series | 2020/06/14 13:40 | Johannes Haerteis v Peter Torebko | 3-6,3-6 |
| DTB German Pro Series | 2020/06/13 15:30 | Johannes Haerteis v Sebastian Fanselow | 6-4,6-4 |
| DTB German Pro Series | 2020/06/12 14:45 | Johannes Haerteis v Christoph Negritu | 7-6,3-6,6-2 |
| DTB German Pro Series | 2020/06/11 14:35 | Johannes Haerteis v Mika Lipp | 6-0,6-0 |
| Tennis Point Exhibition Series | 2020/07/18 08:30 | Sebastian Fanselow v Luca Gelhardt | 3-6,4-6 |
| Tennis Point Exhibition Series | 2020/07/11 09:30 | Luca Gelhardt v Tim Puetz | 3-6,2-6 |
| Tennis Point Exhibition Series | 2020/06/14 11:05 | Luca Gelhardt v Jan Choinski | 6-3,4-6,2-6 |
| Tennis Point Exhibition Series | 2020/06/13 08:00 | Hazem Naw v Luca Gelhardt | 3-6,7-6,2-6 |
| Tennis Point Exhibition Series | 2020/06/12 08:00 | Luca Gelhardt v Tim Puetz | 2-6,2-6 |
| Tennis Point Exhibition Series | 2020/06/11 09:30 | Luca Gelhardt v Constantin Schmitz | 3-6,6-7 |
| Tennis Point Exhibition Series | 2020/06/10 08:00 | Benjamin Hassan v Luca Gelhardt | 6-3,6-4 |
| Tennis Point Exhibition Series | 2020/06/07 08:00 | Yannick Stephan Born v Luca Gelhardt | 3-6,5-7 |