It is said locally that every year the men of Coldstream (to the north of the river) would play mob football with the men of Wark at ba, and the winning side would claim the Ba Green for their country.
According to local lore, men from Coldstream (located north of the river) would play a form of mob football against those from Wark at a location called ba each year. The winning team would then take possession of the Ba Green as a symbol of victory.