The two Greek teams in the Euroleague showed well prepared for the start of the top 16 of the competition after the Christmas break, but it was only Olympiakos that managed to score a win in this first round of games of the second group stage this week.
The Reds produced a great all-around performance at home on Tuesday and managed to eclipse Barcelona with a 74-62 score.
The margin of victory could have been greater for Olympiakos, that was far better than its visitor after the first period at the Peace and Friendship Stadium and enjoyed unexpectedly big leads during the game.
Panathinaikos trailed 14-0 at the start of its game at Fenerbahce on Wednesday, but managed to balance it and lead 58-56 in the second half before succumbing to its host in Istanbul with an 82-75 score.
Besides playing at probably the toughest court in the group, Panathinaikos coach Aleksandar Djordjevic also had to make do without captain Dimitris Diamantidis who got injured in the first half.