Club Deportivo Luis Ángel Firpo (often abbreviated to Firpo) is an El Salvador professional association football club based in Usulután. The club was founded in 1923, and has played at its current home ground, Estadio Sergio Torres, since 1930. They have won ten Primera Division Champions titles. Firpo has the fourth highest total of major honours won by a Salvadoran club. The club's most successful period was between 1988 and 2000, when they won the El Salvadoran title seven times. Firpo's historical rivals are C.D. Águila, Alianza F.C. and C.D. FAS. The Derby de Oriente (vs C.D. Águila) is the most important game out of all three matches. These four clubs are considered the "best 4" of El Salvador football. The club's traditional kit colours are white and red, blue is also used but it is less predominant. The colours were adopted from the Argentinian side San Lorenzo de Almagro, of which Luis Ángel Firpo was a supporter.