| TT Star Series | 2021/08/02 13:45 | Jakub Zelinka v David Reitspies | W | 3-2 |
| TT Star Series | 2021/07/02 13:25 | David Reitspies v Jakub Zelinka | L | 3-1 |
| TT Star Series | 2021/07/01 06:00 | Jakub Zelinka v David Reitspies | W | 3-2 |
| TT Star Series | 2021/05/21 13:18 | David Reitspies v Jakub Zelinka | L | 3-0 |
| TT Star Series | 2021/05/21 07:45 | David Reitspies v Jakub Zelinka | L | 3-2 |
| TT Star Series | 2021/04/05 09:15 | David Reitspies v Jakub Zelinka | L | 3-1 |
| TT Star Series | 2021/01/04 10:15 | Jakub Zelinka v David Reitspies | L | 2-3 |
| TT Star Series | 2021/09/07 08:45 | Jakub Zelinka v Michal Benes | W | 3-2 |
| TT Star Series | 2021/09/06 12:45 | Jakub Zelinka v Tomas Martinko | W | 3-0 |
| TT Star Series | 2021/09/06 10:15 | Jakub Zelinka v Jakub Kleprlik | L | 1-3 |
| TT Star Series | 2021/09/06 08:15 | Jakub Zelinka v Frane Runjic | W | 3-1 |
| TT Star Series | 2021/09/06 06:00 | Jakub Zelinka v Oleksandr Tymofieiev | W | 3-2 |
| Czech Open | 2021/08/22 12:05 | Jeet Chandra v Jakub Zelinka | L | 3-1 |
| Czech Open | 2021/08/21 10:25 | Jakub Zelinka v Zhenlong Liu | W | 3-1 |
| WTT Contender Budapest | 2021/08/15 18:00 | Aleksandr Tyutryumov v Jakub Zelinka | L | 3-2 |
| TT Star Series | 2021/09/07 09:45 | David Reitspies v Oleksandr Tymofieiev | L | 0-3 |
| TT Star Series | 2021/09/06 13:45 | Michal Obeslo v David Reitspies | W | 0-3 |
| TT Star Series | 2021/09/06 11:15 | Tomas Martinko v David Reitspies | W | 2-3 |
| TT Star Series | 2021/09/06 08:45 | Jakub Kleprlik v David Reitspies | W | 0-3 |
| TT Star Series | 2021/09/06 06:35 | Frane Runjic v David Reitspies | W | 0-3 |
| TT Star Series | 2021/08/31 13:45 | David Reitspies v Tomas Konecny | W | 3-1 |
| TT Star Series | 2021/08/31 12:23 | David Reitspies v Jiri Martinko | W | 11-9 |
| TT Star Series | 2021/08/31 09:45 | David Reitspies v Michal Benes | W | 3-1 |