| TT Star Series | 2021/05/25 11:15 | Jakub Kleprlik v Jakub Slapnicka | L | 3-0 |
| TT Star Series | 2021/05/25 09:45 | Ondrej Kveton v Jakub Slapnicka | L | 3-1 |
| TT Star Series | 2021/05/25 07:45 | Tomas Konecny v Jakub Slapnicka | L | 3-0 |
| TT Star Series | 2021/05/24 13:15 | Jakub Seibert v Jakub Slapnicka | L | 3-2 |
| TT Star Series | 2021/05/24 10:45 | Michal Benes v Jakub Slapnicka | L | 3-1 |
| TT Star Series | 2021/05/24 09:15 | David Reitspies v Jakub Slapnicka | L | 3-0 |
| TT Star Series | 2021/05/24 06:00 | Dmitrij Prokopcov v Jakub Slapnicka | L | 3-0 |
| TT Star Series | 2021/05/18 11:15 | Jakub Slapnicka v Filip Cernota | L | 0-3 |