Lazaros Christodoulopoulos scored to give defending champion Panathinaikos a 1-0 win over struggling Atromitos.
Panathinaikos remains second in the Greek standings, a point behind Olympiakos, which trounced Panionios 5-0 on Saturday (video).
There were no league games on Sunday due to local government elections.
In other action:
Asteras – Panserraikos 0-2 (video)
Xanthi – Iraklis 2-2
Oly. Volou – Kerkyra 1-0
Aris – Larissa 1-1
Kavala – PAOK 0-1
AEK – Ergotelis 3-1