 In the 1970s, the club was led by Nikos Darivas at point guard and Dimitris Fosses at center, and starting with the 1971–72 season, the club played in the Greek top division for all but one year of the following decade.Maroussi qualified for the European third-tier level FIBA Korać Cup's 1978–79 season.The club was then relegated after the 1980–81 season, and alternated between the second-tier level A2 League and the third-tier level B League for the next 18 years.