Panathinaikos waited until the 67th minute for its first goal against Panetolikos before going on to win 4-0 Sunday in the Greek league.
Marcus Berg completed his hat trick in injury time — after scoring in the 67th and 80th minutes — with Robin Lod scoring in the 89th.
Fourth-placed Panathinaikos is a point behind PAOK — which drew 0-0 at Xanthi — and three behind Panionios, 1-0 winner at Veria on Saturday.
Olympiakos, which beat Larissa 2-0 Saturday, is 13 points ahead of Panionios and seemingly unstoppable in its quest for a 19th league title in 21 seasons.
In Sunday’s most exciting game, Giannena went 2-0 up on host Platanias by the 11th. Platanias equalized before halftime and went 3-2 ahead before Giannena made the final score 3-3.