| TT Star Series | 2023/09/23 06:00 | Jakub Seibert v Boguslaw Koszyk | W | 1-3 |
| TT Star Series | 2023/02/13 14:15 | Boguslaw Koszyk v Jakub Seibert | L | 2-3 |
| TT Star Series | 2022/12/15 10:45 | Jakub Seibert v Boguslaw Koszyk | L | 3-1 |
| TT Star Series | 2021/11/18 11:45 | Boguslaw Koszyk v Jakub Seibert | W | 3-0 |