Panathinaikos won 2-0 Levadiakos at its stadium thanks to second-half goals by starts Marcus Berg (57') and Michael Essien (78'), which was his first with the Greens.
It was also the first goal of the Ghanaian midfielder after 967 days and, with that result, Andrea Stramaccioni's team climbed at the third Super League position with 35 points.