Panathinaikos maintained their perfect start to the season with a second win from as many Super League games.
Henk ten Cate's side made life hard for themselves, however, beating Xanthi 1-0 at home through Kostas Katsouranis' 39th-minute decider.
Olympiacos won their opening match of their season, beating Larissa 2-0 away from home. Geraldo Leonardo (22) and Enzo Maresca (32) provided the goals.
AEK Athens were also 1-0 winners, returning from Atomitos with all three points after Ismael Blanco's 58th-minute effort proved the difference between the sides.
Elsewhere today Giannina beat Panthrakikos 2-0 and PAOK Salonika enjoyed a 3-0 win at home to Levadiakos.
