Panathinaikos moved up to minus three points after winning its Greek league season-opener 1-0 at Xanthi on Sunday.
Financially troubled Panathinaikos started the season with minus six points due to money owed to players.
Yiannis Bouzoukis scored with a long-range effort in the 69th minute, following a half-hearted clearance by Xanthi goalkeeper Zivko Zivkovic.
Olympiakos also started with a 1-0 win, at home against Levadiakos, thanks to a 62nd-minute free kick by veteran Lazaros Christodoulopoulos, a new signing from last season’s champion AEK Athens.
Also Sunday, OFI Crete drew 2-2 at Panionios.
On Saturday, AEK beat Giannena 2-0 and last season’s runner-up PAOK beat Asteras 1-0.
Lamia hosts Aris on Monday. [AP]