| Challenger Ochsenhausen | 2017/10/09 07:50 | Demeter, Lehel v Nandor Ecseki | W | 0-3 |
| Challenger Ochsenhausen | 2017/02/13 10:00 | Demeter, Lehel v Nandor Ecseki | L | 3-1 |
| Ligue des Champions | 2021/09/16 17:20 | Nandor Ecseki v Zsolt Peto | W | 3-2 |
| Ligue des Champions | 2021/09/15 17:35 | Monteiro, Thiago v Nandor Ecseki | L | 3-2 |
| ITTF European Team Championships, Singles | 2021/08/29 17:30 | Tal Israeli v Nandor Ecseki | W | 0-3 |
| ITTF European Team Championships, Singles | 2021/08/29 13:00 | Nandor Ecseki v Osiro, Pedro | W | 3-1 |
| ITTF European Team Championships, Singles | 2021/08/28 12:15 | Nandor Ecseki v Samuli Soine | W | 3-1 |
| ITTF European Team Championships, Singles | 2021/08/27 18:00 | Nandor Ecseki v Eskil Lindholm | L | 2-3 |
| ITTF European Team Championships, Singles | 2021/08/27 16:00 | Nandor Ecseki v Borgar Haug | L | 0-3 |
| WTT Contender Budapest | 2021/08/18 17:00 | Tomas Polansky v Nandor Ecseki | L | 3-1 |
| Ligue des Champions | 2021/09/16 16:50 | Andreas Levenko v Demeter, Lehel | L | 3-2 |
| Ligue des Champions | 2021/09/15 12:50 | Sidorenko, Vladimir v Demeter, Lehel | W | 2-3 |
| TT Star Series | 2021/06/13 14:42 | Demeter, Lehel v Krisztian Molnar | W | 3-0 |
| Europe Cup | 2021/05/14 17:35 | Demeter, Lehel v Daniel Habesohn | L | 1-3 |
| Europe Cup | 2021/05/14 08:45 | Andreas Levenko v Demeter, Lehel | L | 3-1 |
| Europe Cup | 2021/05/12 14:20 | Diez, Endika v Demeter, Lehel | W | 2-3 |
| Europe Cup | 2021/03/28 10:00 | Andrea Landrieu v Demeter, Lehel | L | 3-0 |
| Europe Cup | 2021/03/27 18:15 | Demeter, Lehel v Leon Santek | W | 3-1 |