Betis

The official date of foundation of the club is September 12, 1907 — students of the Polytechnic College of Sevilla from Calle Cervantes decided to create their own separate club, as opposed to the existing ones, and gave it the name Sevilla Balompié. A little later, they were joined by some of the leaders of Sevilla, dissatisfied with the policy of player selection. Thus, in 1907 Sevilla had two soccer clubs — Sevilla Football Club and Sevilla Balompie.

In 1910, another club was created — Betis Football Club, named after the Guadalquivir River. In 1914, Sevilla Balompié and Betis Football Club merged and the Betis Balompie club was formed. In the same year, as a sign of special attention and patronage from the Royal Court, they received the prefix "Real," which, depending on political changes in the country, sometimes disappeared, then reappeared.

In 1912, Manuel Ramos Asensio, one of the club's founders, returned from Glasgow with a set of green and black striped shirts donated by the local Celtic club and suggested that Betis adopt these colors. This coloring was later considered unfortunate, as the team lost several matches in a row in the Celtic uniform, and it was later decided to take the colors of the flag of Andalusia, adopted in 1918.

The green flag, which appeared in Andalusia in the 8th century, was the banner of the Umayyad Dynasty, on which the white color crosses the green, symbolizing the union between the two nations: the Umayyads and the Almohads.

Real Betis won La Liga in 1935 and are one of the few clubs to which La Liga subordinated (9 in total).