| TT Cup (2023) | 12/17 15:20 | - | Karel Kastner v Vladimir Svoboda | L | 1-3 | |
| TT Cup (2023) | 12/13 19:00 | - | Stanislav Jansa v Karel Kastner | W | 2-3 | |
| TT Cup (2023) | 12/13 17:50 | - | Karel Kastner v Martin Novak | W | 3-2 | |
| TT Cup (2023) | 12/13 16:20 | - | Stanislav Jansa v Karel Kastner | L | 3-2 | |
| TT Cup (2023) | 12/13 15:50 | - | Pavel Vyvial v Karel Kastner | W | 0-3 | |
| TT Cup (2023) | 12/11 18:25 | - | Karel Kastner v Pavel Vyvial | L | 0-3 | |
| TT Cup (2023) | 12/11 17:20 | - | Stanislav Jansa v Karel Kastner | L | 3-2 | |
| TT Cup (2023) | 12/11 16:50 | - | Pavel Vyvial v Karel Kastner | W | 0-3 | |
| TT Cup (2023) | 12/11 15:50 | - | Karel Kastner v Vladimir Svoboda | L | 1-3 | |
| TT Cup (2023) | 12/09 10:55 | - | Karel Kastner v Marek Teiml | L | 1-3 | |
| TT Cup (2023) | 12/09 09:50 | - | Karel Kastner v Vladimir Libovicky | W | 3-1 | |
| TT Cup (2023) | 12/09 08:20 | - | Marek Teiml v Karel Kastner | W | 1-3 | |
| TT Cup (2023) | 12/09 07:50 | - | David Nosek v Karel Kastner | W | 2-3 | |
| TT Cup (2023) | 12/05 18:55 | - | Karel Kastner v Jan Zalesky | W | 3-2 | |
| TT Cup (2023) | 12/05 17:20 | - | Karel Kastner v Jan Zalesky | W | 3-0 | |
| TT Cup (2023) | 12/05 16:20 | - | Karel Kastner v Zdenek Bron | L | 1-3 | |
| TT Cup (2023) | 12/05 15:20 | - | Karel Kastner v Vladimir Libovicky | W | 3-2 | |
| TT Cup (2023) | 12/02 09:50 | - | Karel Kastner v Marek Teiml | - | Cancelled | |
| TT Cup (2023) | 12/02 08:20 | - | Pavel Vyvial v Karel Kastner | - | Cancelled | |
| TT Cup (2023) | 12/02 07:50 | - | David Nosek v Karel Kastner | - | Cancelled | |
| TT Cup (2023) | 11/26 14:25 | - | Zdenek Bron v Karel Kastner | L | 3-0 | |
| TT Cup (2023) | 11/26 13:50 | - | Marek Teiml v Karel Kastner | L | 3-1 | |
| TT Cup (2023) | 11/26 12:50 | - | Karel Kastner v Zdenek Bron | L | 1-3 | |
| TT Cup (2023) | 11/26 11:20 | - | Pavel Vyvial v Karel Kastner | L | 3-1 | |
| TT Cup (2023) | 11/25 15:00 | - | Jaroslav Podrapsky v Karel Kastner | W | 0-3 | |
| TT Cup (2023) | 11/25 13:50 | - | Karel Kastner v Vladimir Libovicky | W | 3-2 | |
| TT Cup (2023) | 11/25 12:20 | - | Jaroslav Podrapsky v Karel Kastner | L | 3-1 | |
| TT Cup (2023) | 11/25 11:50 | - | Zdenek Bron v Karel Kastner | W | 2-3 | |
| TT Cup (2023) | 11/23 18:20 | - | Karel Kastner v Pavel Vyvial | L | 1-3 | |
| TT Cup (2023) | 11/23 17:50 | - | Karel Kastner v Tomas Kocvara | L | 0-3 |