Panathinaikos is four points behind Olympiakos but has two games in hand, the first one being against Doxa Dramas at home on Wednesday.
The Reds strolled to a 3-1 home win over Levadiakos thanks to a brace by Kevin Mirallas and a Panayiotis Korbos own goal. AEK, in third, drew 1-1 at home with Xanthi, who were leading via Marko Markovski before the Leonardo equalizer.
Fourth-placed PAOK came from 1-0 down to beat visiting Ergotelis 2-1 thanks to goals by Dimitris Salpingidis and Lino.
Elsewhere Panionios beat Panetolikos 1-0 and OFI downed Doxa 2-0, while the Atromitos vs Aris and Kerkyra vs Asteras Tripolis matches ended scoreless.