| TT Star Series | 2021/08/17 12:45 | David Reitspies v Tomas Tregler | W | 3-2 |
| TT Star Series | 2021/08/17 08:45 | David Reitspies v Tomas Tregler | W | 3-1 |
| TT Star Series | 2021/07/08 06:00 | David Reitspies v Tomas Tregler | W | 3-0 |
| TT Star Series | 2021/07/06 12:40 | Tomas Tregler v David Reitspies | W | 0-3 |
| TT Star Series | 2021/07/05 12:15 | David Reitspies v Tomas Tregler | L | 2-3 |
| TT Star Series | 2021/06/25 12:36 | David Reitspies v Tomas Tregler | L | 2-3 |
| TT Star Series | 2021/06/25 06:00 | David Reitspies v Tomas Tregler | L | 0-3 |
| Others | 2021/06/22 13:58 | David Reitspies v Tomas Tregler | W | 3-2 |
| TT Star Series | 2021/09/20 11:45 | David Reitspies v Amirreza Abbasi | W | 3-1 |
| TT Star Series | 2021/09/20 09:15 | David Reitspies v Jakub Seibert | W | 3-0 |
| TT Star Series | 2021/09/20 07:45 | Viktor Brodd v David Reitspies | W | 0-3 |
| Challenger Ochsenhausen | 2021/09/14 14:40 | Dauud Cheaib v David Reitspies | W | 2-3 |
| Challenger Ochsenhausen | 2021/09/14 13:15 | David Reitspies v Evgueni Chtchetinine | W | 3-1 |
| Challenger Ochsenhausen | 2021/09/14 11:00 | David Reitspies v Fedor Kuzmin | W | 3-2 |
| Challenger Ochsenhausen | 2021/09/14 07:40 | David Reitspies v Dauud Cheaib | L | 2-3 |
| Challenger Ochsenhausen | 2021/09/13 18:40 | David Reitspies v Florian Bluhm | W | 3-0 |
| TT Star Series | 2021/09/20 11:15 | Viktor Brodd v Tomas Tregler | L | 3-2 |
| TT Star Series | 2021/09/20 08:45 | Oleksandr Tymofieiev v Tomas Tregler | W | 0-3 |
| TT Star Series | 2021/09/20 06:35 | Thomas Keinath v Tomas Tregler | L | 3-1 |
| TT Star Series | 2021/08/27 10:15 | Dmitrij Prokopcov v Tomas Tregler | L | 3-1 |
| TT Star Series | 2021/08/27 08:45 | Michal Bankosz v Tomas Tregler | W | 1-3 |
| TT Star Series | 2021/08/27 07:10 | Tomas Tregler v Abdel Kader Salifou | L | 1-3 |
| TT Star Series | 2021/08/26 13:15 | Tomas Tregler v Jakub Folwarski | W | 3-0 |
| TT Star Series | 2021/08/26 11:45 | Jakub Kleprlik v Tomas Tregler | L | 3-1 |