| Champions League | 09/24 11:35 | - | Lehel Demeter v Tomislav Japec | L | 2-3 | |
| European Champions League | 09/24 09:40 | - | Lehel Demeter v Filip Cipin | L | 0-3 | |
| European Champions League | 09/23 17:30 | - | Vladislav Ursu v Lehel Demeter | L | 3-1 | |
| European Champions League | 09/23 09:30 | - | Lehel Demeter v Jin Ueda | L | 0-3 | |
| Champions League | 09/08 09:40 | - | Lehel Demeter v Carlos Franco | W | 3-2 | |
| Champions League | 09/07 16:30 | - | Tomas Konecny v Lehel Demeter | L | 3-0 | |
| Champions League | 09/07 09:30 | - | Lehel Demeter v Emmanuel Lebesson | L | 0-3 | |
| Europe Cup | 10/21 16:00 | - | Lehel Demeter v Patrik Juhasz | W | 3-0 | |
| Champions League | 09/17 13:50 | - | Lehel Demeter v Thiago Monteiro | W | 3-1 | |
| Champions League | 09/17 13:05 | - | Lehel Demeter v Benjamin Brossier | L | 1-3 | |
| Champions League | 09/16 19:15 | - | Nandor Ecseki v Lehel Demeter | L | 3-1 | |
| Champions League | 09/16 16:50 | - | Andreas Levenko v Lehel Demeter | L | 3-2 | |
| Champions League | 09/15 12:50 | - | Vladimir Sidorenko v Lehel Demeter | W | 2-3 | |
| Others | 06/13 14:42 | - | Lehel Demeter v Krisztian Molnar | W | 3-0 | |
| Europe Cup | 05/14 17:35 | 1 | Lehel Demeter v Daniel Habesohn | L | 1-3 | |
| Europe Cup | 05/14 08:45 | 1 | Andreas Levenko v Lehel Demeter | L | 3-1 | |
| Europe Cup | 05/12 14:20 | 1 | Endika Diez v Lehel Demeter | W | 2-3 | |
| Europe Cup | 03/28 10:00 | 1 | Andrea Landrieu v Lehel Demeter | L | 3-0 | |
| Europe Cup | 03/27 18:15 | 1 | Lehel Demeter v Leon Santek | W | 3-1 | |
| Europe Cup | 12/13 19:00 | - | Tomas Konecny v Lehel Demeter | L | 3-0 | |
| Europe Cup | 12/13 17:50 | - | Borna Kovac v Lehel Demeter | W | 1-3 | |
| Europe Cup | 09/15 08:40 | - | Lehel Demeter v Anxo Iglesias Nunez | W | 3-0 | |
| ETTU Cup | 09/14 17:00 | - | David Comellau v Lehel Demeter | W | 2-3 | |
| Challenger Ochsenhausen | 05/21 12:35 | 1 | Daniel Gorak v Lehel Demeter | L | 3-2 | |
| Challenger Ochsenhausen | 05/21 11:00 | 1 | Daniel Kleinert v Lehel Demeter | L | 3-1 | |
| Challenger Ochsenhausen | 05/21 09:40 | 1 | Lehel Demeter v Sven Happek | W | 3-1 | |
| Challenger Ochsenhausen | 05/20 19:20 | 1 | Andrei Putuntica v Lehel Demeter | W | 1-3 | |
| Challenger Ochsenhausen | 05/20 16:40 | 1 | Daniel Gorak v Lehel Demeter | L | 3-0 | |
| Challenger Ochsenhausen | 05/20 14:40 | 1 | Gaston Alto v Lehel Demeter | L | 3-1 | |
| Challenger Ochsenhausen | 05/20 09:50 | 1 | Josip Huzjak v Lehel Demeter | W | 2-3 |