[2] Founded in 1909 by Jaime Rovira, Atlético FC joined the Catalan Football Federation at the end of August 1910 and soon competed in the second tier of the Catalan championship alongside CE Sabadell FC, thus sparkling a football rivalry in the city.

[1][3] Thus, the two main clubs in Sabadell competed in the top tier for the next few years,[1][4] until the 1918–19 campaign, when Atlético Sabadell was relegated after finishing last and losing the promotion match to CE Europa 1–4.

[1][5] The following season ended up being even worse, as Atlético Sabadell finished last in the second tier and again lost the promotion match, this time to Martinenc.

[6] Two years later, in the 1921–22 season, Atlético won the third tier championship, thus returning to second.

[7] The club remained in this category for the next eleven seasons, surviving three relegation promotions against Reus Deportiu, Palafrugell and UD Girona, but at the end of the 1932–33 season, Atlético Sabadell was finally relegated to the third tier of Catalan football, where it began to lose momentum and was dissolved in 1935.