| TT Cup (2023) | 06/18 11:20 | - | Ondrej Knazik v Jan Trefny | L | 3-0 | |
| TT Cup (2023) | 06/18 10:50 | - | Petr Priscak v Jan Trefny | L | 3-0 | |
| TT Cup (2023) | 06/17 17:55 | - | Jan Trefny v Pavel Verner | L | 1-3 | |
| TT Cup (2023) | 06/17 16:55 | - | Chang/Liang v Jan Trefny | L | 3-0 | |
| TT Cup (2023) | 06/17 16:25 | - | Josef Pistora v Jan Trefny | W | 1-3 | |
| TT Cup (2023) | 06/17 15:25 | - | Jan Trefny v Pavel Verner | W | 3-1 | |
| TT Cup (2023) | 06/13 13:55 | - | Michal Nemec v Jan Trefny | W | 2-3 | |
| TT Cup (2023) | 06/13 12:55 | - | Jaroslav Zamyslicky v Jan Trefny | L | 3-1 | |
| TT Cup (2023) | 06/13 12:25 | - | Michal Nemec v Jan Trefny | L | 3-1 | |
| TT Cup (2023) | 06/13 12:25 | - | Ondrej Knazik v Jan Trefny | - | Cancelled | |
| TT Cup (2023) | 06/13 11:25 | - | Jan Trefny v Zdenek Dusek | L | 1-3 | |
| TT Cup (2023) | 06/12 17:50 | - | Jan Trefny v Pavel Kocabek | L | 2-3 | |
| TT Cup (2023) | 06/12 16:50 | - | Jan Trefny v Pavel Verner | W | 3-1 | |
| TT Cup (2023) | 06/12 15:20 | - | Pavel Kocabek v Jan Trefny | W | 1-3 | |
| TT Cup (2023) | 06/12 14:50 | - | Ondrej Knazik v Jan Trefny | W | 2-3 | |
| TT Cup (2023) | 06/11 18:25 | - | Jan Trefny v Petr Priscak | W | 3-2 | |
| TT Cup (2023) | 06/11 16:55 | - | Jan Trefny v Ondrej Knazik | W | 3-2 | |
| TT Cup (2023) | 06/11 15:55 | - | Jan Trefny v Vladimir Milata Jnr | L | 0-3 | |
| TT Cup (2023) | 06/11 14:55 | - | Jan Trefny v Petr Priscak | W | 3-2 | |
| TT Cup (2023) | 06/11 13:20 | - | Jan Trefny v Josef Pistora | L | 2-3 | |
| TT Cup (2023) | 06/11 12:20 | - | Ondrej Knazik v Jan Trefny | L | 3-1 | |
| TT Cup (2023) | 06/11 11:50 | - | Josef Pistora v Jan Trefny | W | 2-3 | |
| TT Cup (2023) | 06/11 10:50 | - | Jan Trefny v Jakub Dvorak | L | 1-3 | |
| TT Cup (2023) | 06/02 18:25 | - | Jan Trefny v Tomas Krejci | W | 3-0 | |
| TT Cup (2023) | 06/02 17:25 | - | Jan Trefny v Tomas Krejci | W | 3-1 | |
| TT Cup (2023) | 06/02 15:55 | - | Pavel Verner v Jan Trefny | W | 1-3 | |
| TT Cup (2023) | 06/02 15:25 | - | Vojtech Sanc v Jan Trefny | W | 0-3 | |
| TT Cup (2023) | 05/25 09:50 | - | Ondrej Knazik v Jan Trefny | L | 3-0 | |
| TT Cup (2023) | 05/25 08:50 | - | Ondrej Knazik v Jan Trefny | L | 3-1 | |
| TT Cup (2023) | 05/25 07:50 | - | Jan Trefny v Pavel Kocabek | W | 3-1 |