It was founded as Club de Deportes La Calera on 26 January 1954, after the merger of three teams from the city: Condor, Calera Comercio and Tifón. The following year, Deportes La Calera joined Club de Deportes Melón (originated by the merger between Cemento Melón and Minas Navío) to form Unión La Calera.
The club is well known for be the team when Sergio Jadue began his sports manager career before coming to power in the ANFP in 2011. He assumed Unión La Calera Corporation's presidency in 2007. In June 2009 he was appointed Club's President of the Board. During his management, Unión La Calera was promoted, after 26 years, to top-tier in 2010. After his departure, the team had a brief success in 2011's first part, reaching the Torneo Apertura's semi-final. In that tournament, highlighted players like Ramón Ignacio Fernández, Braian Rodríguez or Gonzalo Barriga.
History
1954–1970: Beginnings
The club was founded on 15 April 1955. It was following the merger between five local clubs: Tifón, Minas Navío, Cóndor, Cemento Melón and Calera Comercio. Nevertheless, the club's foundation its recorded on 26 January 1954.
They debuted in the 2011 Torneo Apertura on 30 January with a 1–1 draw with Santiago Morning.[2] In this match the scores were from Paraguayan striker Ever Cantero for Santiago Morning and an own-goal from Edgardo Abdala.[2][3] The next week on 6 February, the Uruguayan Braian Rodríguez (the striker from San Martín de Porres)[4] scored Calera's first goal in top-tier in a 1–0 home win over Unión San Felipe.[4] Besides, it was the club's first goal scored by a team's player after its 24 year-absence in Primera from 1987 season (considering Abdala's own goal). On 12 February, for the third week, they surprised everyone after beating 2–1 to Universidad Católica as local in Estadio Municipal Nicolás Chahuán Nazar.[5] The goals for Calera were scored by the defender Claudio Muñoz in the 39th minute[5] (who precisely played in Universidad Católica between 2004 and 2007, prior to play in Universidad de Concepción) and Diego Cuéllar in the 75th minute,[5] who netted the tie-breaker goal after Hans Martínez's equalizing goal in 66th minute.[5] Thereby, Unión La Calera broke the small unbeaten Universidad Católica had in the first two games[5] (a 0–2 away win over Deportes Iquique[6] and a 3–1 victory against Audax Italiano).[7] Nevertheless, on 19 February, now Calera's short unbeaten was broken by Cobresal which defeat 3–1 the team in El Salvador[8] with a hat-trick of Joel Soto.[9][8] The goal for Calera was of Alejandro Risso.[9] The following week the team was recovered from the 3–1 defeat with Cobresal, beating 2–0 to Deportes La Serena at Nicolás Chahuán Nazar, but after this victory, an important triumph was against Cobreloa in Calama with a goal of Ramón Fernández in the 17th minute.[10] This victory meant the team's climb to the league table's first place, being there with thirteen points next to Universidad Católica.[10] The next matchday, Católica and Calera remained as table's leaders after both teams won to Universidad de Concepción (Calera; 2–0) and Palestino (Católica; 1–2).[11]
On 11 March, Unión La Calera had to play with giants Colo-Colo at Estadio Monumental in the capital city Santiago. However, the team was defeated in a 2–0 loss with goals of the Argentinian Lucas Wilchez and Chilean international José Pedro Fuenzalida.[12] The next matchday, on 20 March, Unión La Calera defeated 3–1 as local to Audax Italiano, thereby confirming its second place behind Universidad Católica.[13] The team began losing with a goal of Bryan Carrasco in the 20th minute, but the score of Braian Rodríguez through a penalty, gave encouragement so that later Octavio Pozo and Jorge Ampuero contribute with goals.[13]
Since the 10th week after a 3–1 loss to Unión Española,[14][15] the team went into a losing streak until the end of the regular phase which finished in the seventeenth week. Since there, Unión La Calera draw then with Palestino (with a goal of Braian Rodríguez in 90th minute),[16] lost with Universidad de Chile by a 2–0 score,[17] again 2–0 with O'Higgins the next week (13th)[18] and in the 15th matchday (after a 0–0 draw Huachipato in the 14th week[19]) lost 1–0 to Deportes Iquique with a score of defender Juan González Calderón.[20] Only a 2–0 win over Ñublense with a twice of Braian Rodríguez in the 16th matchday,[21] and a 1–1 away draw with Santiago Wanderers in regular phase's final matchday,[22] secured the team's classification to the playoffs (the qualified were eight teams out of a total of eighteen).[22] The team finished in the sixth position with 25 points over Unión San Felipe with 24 points (7th) and Colo-Colo with 23 points (8th).[22][23]
Source: Asociación Nacional de Fútbol Profesional Rules for classification: 1. Points; 2. Wins; 3. Goal difference; 4. Goals scored; 5. Away goals; 6. Red cards; 7. Yellow cards; 8. Draw. Notes:
^Colo-Colo lost three points for not present hiring files of midfielder Joan Muñoz during the game against Cobresal, so that Colo-Colo lost for walkover.
Playoffs
Background and Results
The favorite to win the championship was Universidad Católica which finished in the regular phase's first place. Nevertheless, Católica (after winning to Unión La Calera in the semi-finals) lost to Universidad de Chile in the final's second leg, where Universidad de Chile won 4–1, reversing the first leg's 0–2.[24] For its part, Unión La Calera already without the surprise sensation which generated in the tournament's early part, defeated to Unión Española in the quarterfinals[25] for then repeat a 2–1 triumph over Católica in the semifinals first leg.[26] Unfortunately, in the next leg, the team was eliminated after losing 1–0 in Santiago.[27]
On 26 May, Unión La Calera and Unión Española played the quarterfinal's first leg at Estadio Municipal Nicolás Chahuán Nazar and the team recovered from its 3–1 loss in the regular phase. The game's only one goal was scored by Ángel Carreño in the 68th minute.[25][28] The match had 2,459 spectators.[28]
On 29 May, the teams played the quarterfinal's second leg at Estadio Santa Laura. The game ended in a 0–0 draw which allowed to Unión La Calera the qualification to the semifinal.[29] The match had 4,842 spectators.[30]
For its part, Unión with Sierra also repeated the 4–2–1–3 lineup,[30] being the only one change Leonardo Monje (who scored against Calera in the team's 3–1 defeat as visitors in Santa Laura for the regular phase) instead of Mario Aravena.[30] Between the key events, Leal missed a penalty in the 24th minute and Jaime was sent-off in the 71st minute.[30]
Bahamondes opened the score in the 26th minute[31] and a minute later Gonzalo Barriga scored the partial 2–0.[31] Eight minutes later, Milovan Mirosevic scored through a header the discount, beating thereby to Giovini.[31] The rest of the game was dominated by Unión La Calera, and Universidad Católica suffered the sent-off of Mirosevic (double yellow card; 64th minute)[31] and Rodrigo Valenzuela (direct red card; 72nd minute).[31]
Finished the game, with this victory Unión La Calera had the first opportunity to qualify to the final. They just had to draw in Estadio San Carlos de Apoquindo or win by one goal there, in Chile's capital city Santiago.
For this match, Pizzi changed Católica's lineup to face Calera, this time he remained Toselli in the goal, but played with a 3–2–3–2 lineup (similar to Astorga's 3–4–1–2 lineup):[32] the defenders were Enzo Roco (then Enzo Andía) as left sweeper,[32] Hans Martínez as centre back[32] and Alfonso Parot as right sweeper;[32] as central midfielders were Jorge Ormeño and Francisco Silva;[32] the attacking midfielders were Fernando Meneses (left midfielder), Marcelo Cañete (playmaker) and Felipe Gutiérrez;[32] whilst the forwards were Roberto Gutiérrez and Lucas Pratto.[32] Astorga for its part, remained the same lineup, again with the same players.
The game's only one goal was scored by Enzo Andía in the beginnings of the second half (46th minute). This goal, frustrated Calera's chances to qualify to the final. In that way, thereby was how Calera concluded its first great campaign in Chilean top-level.
Note: Universidad Católica won due to its position at the regular season (U. Católica: 1st, La Calera: 6th)
Emblem
The traditional shield of Unión La Calera consists of one with the colors blue and green divided diagonally, with a "U" in white and borders of the same color. Below, on a red background "La Calera" is presented. In mid-2018 this shield was registered for commercial purposes by Sabino Jadue, former head of the institution, so since 2019 the club occupies a white circular shield with a thick red border where it says “Unión La Calera”, and within the white area the abbreviation «ULC» appears in greenish bluish tones.
This change was resisted by the fans, who held demonstrations in La Calera, and started a campaign on social networks to restore the historic shield. In 2021 the traditional shield returned to the shirts, this time in conjunction with the new insignia.
Uniform
Traditionally Unión La Calera's home kit is composed by a red shirt, white pants and white socks. Its away kit meanwhile is entirely white. During the 2007 Primera B season, Calera's home kit was symbolized by a white and red horizontal striped shirt; its pants and socks were white. This kit is similar to the one used by the team when it got its promotion to Primera División in 1984.
For the 2010 second-tier season, the titular uniform is a red shirt with vertical white bars, red pants and red socks.