The meeting, held in Athens at the stadium "Karaiskakis", ended with a score of 4: 0 in favor of the home team.
The victory for Olympiacos was brought by the goals of Miguel Guerrero, Daniel Podense and Lazar Rangelovic, who scored a double.
The return game will be held in Krasnodar on August 27. The winner of the two-match confrontation will enter the group stage of the Champions League, and the loser - in the Europa League.
It was previously reported that Producer Ruptly was beaten in Athens.