| TT Cup (2023) | 10/22 13:55 | - | Marek Teiml v Karel Kastner | W | 1-3 | |
| TT Cup (2023) | 10/22 12:50 | - | Karel Kastner v David Nosek | W | 3-1 | |
| TT Cup (2023) | 10/22 11:20 | - | Vladimir Libovicky v Karel Kastner | W | 0-3 | |
| TT Cup (2023) | 10/22 10:50 | - | Marek Teiml v Karel Kastner | L | 3-1 | |
| TT Cup (2023) | 10/21 21:20 | - | Zdenek Bron v Karel Kastner | W | 0-3 | |
| TT Cup (2023) | 10/21 20:50 | - | Karel Kastner v Radek Libovicky | L | 0-3 | |
| TT Cup (2023) | 10/21 19:20 | - | Zdenek Bron v Karel Kastner | L | 3-0 | |
| TT Cup (2023) | 10/21 18:50 | - | David Nosek v Karel Kastner | W | 0-3 | |
| TT Cup (2023) | 09/30 21:30 | - | Karel Kastner v Vlastimil Kocvara | W | 3-2 | |
| TT Cup (2023) | 09/30 20:50 | - | Karel Kastner v Vojtech Strouhal | W | 3-2 | |
| TT Cup (2023) | 09/30 19:20 | - | Vlastimil Kocvara v Karel Kastner | L | 3-2 | |
| TT Cup (2023) | 09/30 18:50 | - | Jaroslav Podrapsky v Karel Kastner | L | 3-2 | |
| TT Cup (2023) | 09/23 21:20 | - | Karel Kastner v Marek Teiml | L | 2-3 | |
| TT Cup (2023) | 09/23 20:50 | - | Karel Kastner v David Nosek | W | 3-1 | |
| TT Cup (2023) | 09/23 19:20 | - | Gustav Lomsky v Karel Kastner | L | 3-1 | |
| TT Cup (2023) | 09/23 18:50 | - | Marek Teiml v Karel Kastner | W | 1-3 | |
| TT Cup (2023) | 09/10 09:20 | - | Karel Kastner v Petr Vodal | L | 0-3 | |
| TT Cup (2023) | 09/10 08:50 | - | Karel Kastner v Petr Vodal | W | 3-1 | |
| TT Cup (2023) | 09/10 07:20 | - | Pavel Vyvial v Karel Kastner | L | 3-0 | |
| TT Cup (2023) | 09/10 06:50 | - | Marek Teiml v Karel Kastner | L | 3-2 | |
| TT Cup (2023) | 09/07 18:10 | - | Petr Vodal v Karel Kastner | W | 2-3 | |
| TT Cup (2023) | 09/07 16:40 | - | Pavel Vyvial v Karel Kastner | W | 0-3 | |
| TT Cup (2023) | 09/07 16:10 | - | Petr Vodal v Karel Kastner | L | 3-0 | |
| TT Cup (2023) | 09/07 15:10 | - | Karel Kastner v Stanislav Jansa | L | 2-3 | |
| TT Cup (2023) | 09/02 09:50 | - | Petr Vodal v Karel Kastner | L | 3-1 | |
| TT Cup (2023) | 09/02 08:50 | - | Petr Vodal v Karel Kastner | L | 3-1 | |
| TT Cup (2023) | 09/02 07:50 | - | Karel Kastner v Marek Teiml | W | 3-1 | |
| TT Cup (2023) | 09/02 06:20 | - | Jan Zalesky v Karel Kastner | W | 1-3 | |
| TT Cup (2023) | 08/24 17:20 | - | Vlastimil Kocvara v Karel Kastner | L | 3-2 | |
| TT Cup (2023) | 08/24 16:50 | - | Karel Kastner v Vladimir Libovicky | L | 2-3 |