of the club and brought it to its current glory. Yiannis, Dinos, Giorgos and Vassilis were the first to play, while Leonidas, the youngest of the five, made his debut later on and played for the club for eight years (1927–1935). The club's offensive line, made up of the five brothers, became legendary, rising to a mythical status and soon Olympiacos gained enormous popularity and became the most successful and well-supported club in Greece. Back then, their fan base consisted mainly of the working class, with the team's home ground at Neo Phaliron Velodrome, before moving to its current Karaiskakis Stadium. They became Piraeus Champions in 1925 and 1926. In 1926, the Hellenic Football Federation was founded and organized the Panhellenic Championship in the 1927–1928 season. This was the first national championship, where the regional champions from EPSA league (Athens), EPSP league (Piraeus) and EPSM league (Thessaloniki) competed for the national title during play-offs, with Aris becoming the first champion. The Panhellenic Championship was organized in this manner up until 1958–59. However, in the second season (1928–29) a dispute arose between Olympiacos and the Hellenic Football Federation and as a result, the club did not participate in the championship, with Panathinaikos and AEK Athens deciding to follow Olympiacos. During the course of that season, the three of them played friendly games with each other and formed a group called P.O.K. Meanwhile, the club continued to dominate the Piraeus Championship, winning the 1926–27, 1928–29, 1929–30 and 1930–31 titles and started establishing themselves as the leading force in Greek football; they set a record by remaining undefeated against all Greek teams for three consecutive seasons (14 March 1926 to 3 March 1929), counting 30 wins and 6 draws in 36 games. Those results ignited an enthusiastic reception from the Greek press, who called Olympiacos Thrylos ("Legend") for the first time in history. The fourth Panhellenic Championship took place in 1930–31 and found Olympiacos winning the Greece national league title for the first time ever, which was a milestone that marked the beginning of a very successful era in Olympiacos history. Olympiacos put in a great performance during the competition and won the title very convincingly with 11 wins, 2 draws and only one game lost. They managed to score 7 wins in 7 matches at home, beating Panathinaikos, AEK Athens, Aris, Iraklis and PAOK with the same score: 3–1. The sole exception