P.O.K. (from the initial letters of Podosferikes Omades Kedrou, Greek: Ποδοσφαιρικές Ομάδες Κέντρου, English: Central Football Teams) was a coalition, a kind of athletic trust, of the three main football teams of the Attica (the "big three") which lasted until the mid 60's. The term dates to in 1927, when Olympiacos F.C., Panathinaikos F.C. and AEK Athens F.C. withdrew from the Greek Championship after disagreements with the Hellenic Football Federation (HFF), mainly over the championship's financial status. The HFF determined that league's revenues would be equally divided between all teams that participated. Olympiacos, Panathinaikos and AEK did not agree with this, and formed a group called P.O.K. During that season, they played friendly matches with each other. The name P.O.K. is currently used to allude to the continuing dominance of the three clubs in the National A Division. Rarely does a team outside these three finish in the top three spots of the Championship; doing so is called "breaking the P.O.K.". Since 1928, only three other teams - Aris F.C., Athlitiki Enosi Larissa F.C. and PAOK FC - have won the Greek Championship. Finally, on March 7, 1963, the POK officially ceased to exist. The entry of the teams in the bulletins of PRO-PO, the establishment of the A 'national category and the participation of the Greek teams in the European football cups, made this institution weaken and finally to be abolished. Establishment In 1927/28, EEA (Committee of Professional Sports: Greek, Επιτροπή Επαγγελματικού Αθλητισμού) established the first football championship in Greece with teams of the 3 founding football associations: Athens, Piraeus and Macedonia Football Clubs Association. Before the season had begun, EEA ordered other teams not to play against Olympiacos, as they were punished by the Hellenic Football Federation. Panathinaikos and AEK Athens did not obey and organized friendly matches. This was reportedly part of a dispute between these three clubs and the league administration for control of the league. As a consequence, the EEA dropped all three clubs on October 31, 1927, and organized the league without them. The teams that took their place were Atromitos from Athens, Ethnikos from Piraeus, and Aris from Thessaloniki. Activities The teams that constituted the P.O.K. tried to weaken the EEA, holding their championship with the participation of some other smaller clubs, although the majority of clubs continued under the official administration of EEA. They also organized various tournaments, during which they invited