ATHENS, Greece — AEK Athens ended Olympiakos' undefeated run 22 games into the Greek league season on Saturday, beating the defending champion 1-0.
Ronald Vargas scored in the 78th minute, grabbing the rebound after Diego Buonanotte's penalty kick hit the post.
Olympiakos was left with 9 players after Luka Milivojevic was dismissed with a second yellow card for handling the ball inside the area, a call which led to the penalty kick.
Olympiakos had also lost Alberto Botia in the 47th with a direct red card for a last-man foul.
AEK's Rodrigo Gallo was also dismissed, in the 86th.
Second-place AEK is 16 points behind Olympiakos with eight rounds remaining.
Also, Platanias won 2-0 at Panthrakikos and Atromitos vs. Veria ended in a scoreless draw.