 The possibility that arise was that each of the subassociations starts developing their own internal competitions.The Belgrade Football Subassociation created a first tournament in which the final-phase will be played in 1920 and which had the participation of the clubs from the territory covering what was the former Kingdom of Serbia, Vojvodina and the Semberija region, which nowadays corresponds to the north eastern part of Bosnia and Herzegovina.It held two editions and both of them were won by BSK Belgrade.