Olympiacos beat PAOK Salonika 2-0 to move within two points of the league leaders, AEK Athens climbed to third after a win against Panionios, while Doxa Dramas remain bottom after another defeat.
Panathinaikos' six league game winning-run came to an end as Levadiakos got the better of them in a 1-0 victory, while Giannina saw off Kerkyra 2-1.
Sunderland have confirmed the loan signing of Greek defender Sotirios Kyrgiakos from Wolfsburg, with the 32-year-old set to remain on Wearside until the end of the season.
Olympiacos have signed Turkey forward Colin Kazim-Richards on loan from Galatasaray until the end of the season and have an option to make the move permanent.
Olympiacos claimed a comfortable 3-0 win over a nine-man Ergotelis side, while OFI Crete secured a 1-0 victory over FC Xanthi, and Panionios defeated Kerkyra 2-0 at home.
Olympiacos have signed experienced Premier League and former Northern Ireland goalkeeper Roy Carroll on an 18-month contract.
