It has been about two days after the start of the battle, the Romans have showed a remarkable progress by cracking through the entire Ottoman defensive lines in just a day's time, but lost its momentum and are forced to give it a stop. The Ottoman defenders still have the bulk of their manpower left, morales defeated but not yet depleted, with the Romans encircling them outside the walls. The Ottoman reinforcements led by Sultan Beyezid II, arrived on the spot after dawn, consisting of a total of eight hundred Janissaries, five hundred horsemen, one thousand guards, one thousand conscripted peasants, two hundred slaves, one hundred Venetians and five hundred troopers from the Bulgarian warlords.
The young Sultan did not give his troops any time to rest or reorganise, ordering them to start attacking the Roman defences the moment they arrived in the area.