 in 1925 the other group, led by Yiannis Andrianopoulos and his five brothers, formed the club that evolved into Olympiacos CFP in 1925.. 

Ethnikos O.F.P.F., colloquially referred to as Ethnikos Piraeus, is a multi-sport club with teams competing in football, water polo, volleyball and basketball.The club's most significant teams, in terms of history and success, are their football and water polo teams, though football is by far the more popular sport.Prior to 1959–60 Greek football was played in regional championships (Athens, Piraeus, and Thessaloniki championships and/or North and South championships) and then the top teams from each region would advance to play for the national championship.