Panathinaikos moved to the top of the Super League thanks to a 1-0 win over Panthrakikos on Sunday.
The Greens now have a maximum nine points from three games and are followed by Aris on seven points.
Panathinaikos struggled to find a way through the Panthrakikos defence on Sunday, even when the hosts were reduced to 10 men in the 55th minute when Yiannis Kanotidis was given a second yellow card.
The Greens still had to wait until the 78th minute for the only goal of the game, which came when Sebastian Leto connected with a Djibril Cisse cross for his third goal of the season.
In Sunday’s late kick-off, AEK beat Iraklis 1-0 thanks to a goal from captain Pantelis Kafes.
PAOK drew 1-1 at Asteras Tripolis, Ergotelis beat Xanthi 1-0 and Levadiakos beat Panionios by the same scoreline.