Luis Angel Firpo

Early history and first golden era

On September 17, 1923, a group of Usulután citizens, mostly of European descent, decided to form a team that represented their community's passion for football. The club elected Gustavo Denys as their first club chairman. They decided to choose red and blue as their team's colours. Originally named Tecún Umán, the club was soon renamed in honor of Luis Ángel Firpo, a famous Argentine boxer.

On November 9, 1923, Club Deportivo Sandino, also based in Usulutan, wanted to merge with Firpo, and it almost came to fruition. However, the main sticking point was that Sandino wanted to appoint the majority of the 41 club directors (36 to Sandino and only five Firpo directors). Following the impasse, Firpo rejected the offer. The members of Luis Ángel Firpo later acquired land near Sergio Torres creek to develop and build a stadium.

At the end of 1930s, Former player Miguel el Zancudo Segurado was named football manager, He centred the team around potent players such as Luis Chispo Morataya, Queco Bolanos, Napoleon Flores Huezo, the Zamora brothers (Ricardo and Miguel), the Quinteros brothers (Leonidas and Lázaro), and the Aguila brothers (Ramón and Mario). The most influential player was midfielder Luis Antonio Regalado, who in 1942 become the first player from LA Firpo to represent El Salvador's national team.

On 22 March 1942, Firpo won their first state title for the Zona Oriental (Eastern State), defeating America de Chinameca 2–1. This allowed them to compete in a round robin competition for the national title against Quequeisque (Central State champion), Ferroccarril (Zona Occidente) and Juventud Olímpica.

Firpo lost their first match against Quequeisque 6–1, this was followed by a 2–1 win against Ferrocarrill, however Quequeisque won the title due to winning two games and drawing one. Firpo finished in third place.

On 25 April 1943, Firpo won their second Zona Oriental title by defeating Corona (San Miguel) 5–3. Once again Firpo competed in a round robin competition for the national title. In the first game Firpo played against reigning champion Quequeisque were the game was tied for the majority of the game 1-1 thanks to goal from Leonidas Quinteros, Sadly Firpo were not able to hold back the tide and lost the game 8–1. This was followed by 2–2 draw against Ferrocarill, another heavy loss against Quequeisque 7–1, and their only victory in the tournament 2–1 against Ferrocarrill. Firpo once again finished in third place.

Due to World War 2, no state competition or final competition were played, Firpo played a series of friendlies which included 3–2 loss against Quequeisque, 5–0 loss against Espana, 2–1 loss against Mecca, and 1–0 win against Juventud Olímpica.

In 1946, Firpo played their first ever international against Honduran Federal tying 3-3, with all three goals scored by Rafael Galvez.

In 1948, Firpo participated in the first national championship. Firpo played 22 out of 24 games, winning 16 games, drawing 7 games, and losing 6 games with a fifth-place finish. . Firpo didn't play the final two games as Once Municipal were crowned national champion with two games to spare.

Difficult years, moderate success and downfall

The following years were plagued with financial instability, players from the first golden era started retiring or leaving. This culminated with the disastrous 1951-52 Campaign, which included 5–0 loss against Leones, 5–4 loss against Independiente, a stripped 2–1 victory Santa Anita due to players being ineligible, their first victory coming after more than half the season played against Juventud Olímpica; this would be their only victory as they only gained five points and finished last in the league.

After signing Honduran Armando Enamorado and Costa Rican Jacobo Godoy ahead of the 1955–56 season, the club finished runner up by one point to Atletico Marte. In the 1957–58 season Firpo was relegated to the second division after only grabbing 13 points from 20 games.

Firpo hired Former player Narciso Romagoza to coach the team in the second division. Romangoza led the team to the final round robin tournament against El Renacimiento de Santa Ana and Platense. Firpo finished the tournament as champion after winning two games, 1 draw and one loss. This allowed Firpo to be promoted after one season, but the same issues arose with economic problems and players departing, which culminated in Firpo being relegated to second division just two years later.

"Yo-yo club": consecutive promotion and relegations

After being relegated in 1962, The club was stuck in the second division for four years, but in 1967 - thanks to players such as Raul Corcio Zavaleta, and foreign players Andres Paretti & Julio Escobar, Firpo were able to finish in the top spot over historic clubs Dragon, Santa Anita and Rey Y Negro. However the success was short lived as they were relegated just two years later in 1969.

In 1972, Firpo decided to hire more experienced players including 1970 World Cup player Sergio Méndez, Alfredo Erado, Fausto Vasquez and Miguel Miche Cornejo, they once again were able to reach promotion. Although Firpo were technically relegated in 1982, Firpo purchased Agave's first division spot for 25,000 colones and remained in the top division. During this period Firpo were struggling financially off the field and on the field, finishing midtable or in the bottom half of the league.