 In the 2015 Greek Basket League playoffs, he was the best player for Panathinaikos, averaging 18.4 points, 8.1 rebounds (5.8 offensive rebounds), and 2.2 assists per game.On August 10, 2015, he signed a one-year deal with AEK Athens.Mavrokefalidis was the top scorer of AEK Athens in the 2015–16 Greek Basket League season, averaging 14.5 points per game.