Ayoub El Kaabi scored in extra-time to secure Olympiacos a dramatic 1-0 win against Fiorentina and the Conference League title on home soil on Wednesday.
The late breakthrough came in the 116th minute as he steered a low header inside the near post. There was a lengthy video review to double-check the goal, but once it was confirmed, history was made for Greek football at the AEK Arena in Athens.
Olympiacos gave Greece a first-ever European title after becoming only the second Greek club to reach a European final, 53 years after Panathinaikos lost the Champions Cup decider in 1971 against Johan Cruyff's Ajax.
Olympiacos are originally from Piraeus, a port city within the Athens urban area and just eight kilometres southwest of Athens' city centre.
Fiorentina, meanwhile, failed to end a title drought of more than 20 years and lost a second consecutive final in the third-tier European competition. Last year, they were defeated by West Ham.