| TT Cup (2023) | 07/30 10:50 | - | Jan Trefny v Stepan Koci | L | 2-3 | |
| TT Cup (2023) | 07/29 13:20 | - | Zdenek Dusek v Jan Trefny | L | 3-2 | |
| TT Cup (2023) | 07/29 12:20 | - | Jan Trefny v Vladimir Milata Jnr | L | 1-3 | |
| TT Cup (2023) | 07/29 11:20 | - | Jan Trefny v Stepan Koci | L | 1-3 | |
| TT Cup (2023) | 07/29 10:20 | - | Jan Trefny v Zdenek Dusek | L | 2-3 | |
| TT Cup (2023) | 07/25 14:25 | - | Ondrej Knazik v Jan Trefny | L | 3-2 | |
| TT Cup (2023) | 07/25 13:25 | - | Jan Trefny v Ondrej Knazik | L | 2-3 | |
| TT Cup (2023) | 07/25 11:55 | - | Martin Juhasz v Jan Trefny | L | 3-2 | |
| TT Cup (2023) | 07/25 11:25 | - | Vojtech Waldhauser v Jan Trefny | W | 1-3 | |
| TT Cup (2023) | 07/22 17:20 | - | Jan Trefny v Vladimir Milata Jnr | W | 3-1 | |
| TT Cup (2023) | 07/22 16:50 | - | Jan Trefny v Vladimir Milata Jnr | W | 3-1 | |
| TT Cup (2023) | 07/22 15:20 | - | Vojtech Waldhauser v Jan Trefny | L | 3-1 | |
| TT Cup (2023) | 07/22 14:50 | - | Tomas Krejci v Jan Trefny | L | 3-2 | |
| TT Cup (2023) | 07/22 09:20 | - | Jan Trefny v Tomas Krejci | L | 2-3 | |
| TT Cup (2023) | 07/22 08:20 | - | Tomas Krejci v Jan Trefny | W | 1-3 | |
| TT Cup (2023) | 07/22 07:50 | - | Ondrej Knazik v Jan Trefny | L | 3-1 | |
| TT Cup (2023) | 07/22 06:50 | - | Jan Trefny v Vladimir Milata Jnr | L | 1-3 | |
| TT Cup (2023) | 07/10 13:50 | - | Jan Trefny v Jaroslav Zamyslicky | W | 3-1 | |
| TT Cup (2023) | 07/10 12:50 | - | Jaroslav Zamyslicky v Jan Trefny | W | 1-3 | |
| TT Cup (2023) | 07/10 11:50 | - | Jan Trefny v Christian Kratochvil | W | 3-0 | |
| TT Cup (2023) | 07/10 10:20 | - | Pavel Kocabek v Jan Trefny | W | 2-3 | |
| TT Cup (2023) | 07/06 18:10 | - | Ondrej Knazik v Jan Trefny | L | 3-0 | |
| TT Cup (2023) | 07/06 16:40 | - | Ondrej Knazik v Jan Trefny | L | 3-2 | |
| TT Cup (2023) | 07/06 16:10 | - | Vladimir Milata Jnr v Jan Trefny | W | 2-3 | |
| TT Cup (2023) | 07/06 15:10 | - | Jan Trefny v Pavel Verner | W | 3-2 | |
| TT Cup (2023) | 07/06 09:50 | - | Vladimir Milata Jnr v Jan Trefny | L | 3-0 | |
| TT Cup (2023) | 07/06 08:50 | - | Jaroslav Zamyslicky v Jan Trefny | L | 3-2 | |
| TT Cup (2023) | 07/06 07:50 | - | Jan Trefny v Vladimir Milata Jnr | W | 3-1 | |
| TT Cup (2023) | 07/06 06:20 | - | Martin Lepka v Jan Trefny | W | 1-3 | |
| TT Cup (2023) | 07/01 17:50 | - | Vladimir Milata Jnr v Jan Trefny | W | 2-3 |