Oscar Hiljemark scores an unlikely goal to give Panathinaikos victory over Larissa.
Olympiakos have named former Albania midfielder Besnik Hasi as their new head coach.
PAOK will also play seven home games behind closed doors and pay a fine of €282,500.
Nottingham Forest have announced Olympiakos owner Evangelos Marinakis has completed his takeover of the club.
Vladan Ivic was taken to hospital for treatment after the incident, which followed a 54th-minute brawl involving several players.
PAOK won the Greek Cup by defeating AEK Athens 2-1 in a final marred by violent clashes between fans that injured more than 40 people, two seriously.