Panathinaikos is on 37 points, AEK on 29 and Olympiakos on 25, as the Reds shared an eventful but goalless draw on Sunday at the Georgios Karaiskakis Stadium in Piraeus.
AEK had the best part of the chances in the derby, that was interrupted for some six minutes in the second half due to flares lit by the home fans.
PAOK is also on 25 points, after beating Volos 3-0 at home, goals coming from Nelson Oliveira, Andrija Zivkovic and Douglas Augusto.
Aris added a 4-0 road win over PAS Giannina on Sunday to its 5-0 win last Tuesday against Lamia, suddenly turning prolific in attack. Fabiano, Nicolas N’Koulou, Moses Odubajo and Luis Palma were on target for the Thessaloniki team at Ioannina.
Panetolikos moved up to seventh with a 3-1 win at Lamia.
On Monday Asteras greets Ionikos and OFI meets Levadiakos.
