| TT Cup (2023) | 03/16 18:20 | - | Karel Kastner v Vojtech Strouhal | W | 3-1 | |
| TT Cup (2023) | 03/16 17:50 | - | Karel Kastner v Vladimir Libovicky | L | 0-3 | |
| TT Cup (2023) | 03/16 16:20 | - | Vojtech Strouhal v Karel Kastner | W | 2-3 | |
| TT Cup (2023) | 03/16 15:50 | - | Frantisek Dvorak v Karel Kastner | W | 1-3 | |
| TT Cup (2023) | 03/11 18:50 | - | Pavel Vyvial v Karel Kastner | L | 3-2 | |
| TT Cup (2023) | 03/11 17:20 | - | David Mutl v Karel Kastner | L | 3-2 | |
| TT Cup (2023) | 03/11 16:50 | - | Pavel Vyvial v Karel Kastner | L | 3-0 | |
| TT Cup (2023) | 03/11 15:50 | - | Karel Kastner v Jan Zalesky | W | 3-1 | |
| TT Cup (2023) | 02/26 18:20 | - | Zdenek Bron v Karel Kastner | W | 2-3 | |
| TT Cup (2023) | 02/26 17:50 | - | Karel Kastner v Vladimir Libovicky | L | 0-3 | |
| TT Cup (2023) | 02/26 16:20 | - | Vlastimil Kocvara v Karel Kastner | L | 3-2 | |
| TT Cup (2023) | 02/26 15:50 | - | Zdenek Bron v Karel Kastner | L | 3-0 | |
| TT Cup (2023) | 02/25 14:20 | - | Jan Spiegel v Karel Kastner | L | 3-0 | |
| TT Cup (2023) | 02/25 13:20 | - | Vlastimil Kocvara v Karel Kastner | W | 1-3 | |
| TT Cup (2023) | 02/25 12:50 | - | Zdenek Bron v Karel Kastner | L | 3-0 | |
| TT Cup (2023) | 02/25 11:50 | - | Karel Kastner v Jan Spiegel | L | 2-3 | |
| TT Cup (2023) | 02/21 18:50 | - | Vladimir Libovicky v Karel Kastner | L | 3-2 | |
| TT Cup (2023) | 02/21 17:20 | - | Zdenek Bron v Karel Kastner | W | 1-3 | |
| TT Cup (2023) | 02/21 16:50 | - | Vladimir Libovicky v Karel Kastner | L | 3-2 | |
| TT Cup (2023) | 02/21 15:50 | - | Karel Kastner v Vojtech Strouhal | W | 3-0 | |
| TT Cup (2023) | 02/14 18:50 | - | Karel Kastner v Vojtech Strouhal | L | 2-3 | |
| TT Cup (2023) | 02/14 17:50 | - | Karel Kastner v Vladimir Libovicky | W | 3-0 | |
| TT Cup (2023) | 02/14 16:20 | - | Pavel Vilhelm v Karel Kastner | L | 3-0 | |
| TT Cup (2023) | 02/14 15:50 | - | Vojtech Strouhal v Karel Kastner | W | 1-3 | |
| TT Cup (2023) | 02/09 18:20 | - | Karel Kastner v Martin Novak | L | 2-3 | |
| TT Cup (2023) | 02/09 17:20 | - | Martin Novak v Karel Kastner | W | 1-3 | |
| TT Cup (2023) | 02/09 16:50 | - | Vlastimil Kocvara v Karel Kastner | L | 3-1 | |
| TT Cup (2023) | 02/09 15:50 | - | Karel Kastner v Lukas Vich | L | 0-3 | |
| TT Cup (2023) | 02/05 11:25 | - | Vojtech Strouhal v Karel Kastner | L | 3-1 | |
| TT Cup (2023) | 02/05 09:55 | - | Karel Kastner v Vojtech Strouhal | L | 1-3 |