| Founded | 1948 |
|---|---|
| First season | 1948-49 |
| Country | Belgium |
| Confederation | FIBA Europe |
| Divisions | 14 |
| Level on pyramid | 2 |
| Promotion to | Pro Basketball League |
| Relegation to | Derde Nationale |
| Domestic cup | Belgian Cup |
| Current champions | LDP Donza (2nd title) (2024-25) |
TheTop Division Men One (TDM1), also known as theBelgian Second Division or theTweede Nationale, is the second level of men'sbasketball in Belgium and the highest amateur level inFlanders.[1]
The league features 14 teams and the champion has the right to promote to thePro Basketball League (PBL).