AEK is now eight points off the pace, after drawing 2-2 at home against Volos Monday night, in a game that the host finished with nine men and the visiting team with 10.
The Yellows had Muamer Tankovic open the score, then Volos took a 2-1 advantage via Franco Ferrari and Amr Warda, before Karim Ansarifard salvaged one point for AEK.
Olympiakos will finish first at the halfway point of the regular season, after a very comfortable win over struggling Larissa.