The Greek Water Polo cup is the second most important competition of Greek men's waterpolo and is organised by KOE (Hellenic Swimming Federation). It was first held in 1953. Initially started as a competition in memory of Pantelis Psychas, Greek athlete of the swimming.[1] The competition was interrupted from 1959 to 1983. Moreover, it wasn't held in 1993-94 season. From 1998-99 season the Final Four system was instituted. Olympiacos Piraeus have won the most titles (25), followed by Ethnikos Piraeus (12).[2] Olympiacos is the team with the most appearances in finals (30) while Ethnikos has the record of successive wins (8).