1925–1933: Foundation and early years , the founder of the club The team was founded in early 1925 by
Magallanes' footballer
David Arellano, who led a group of young players leaving that club after institutional problems. Finally, after meetings and negotiations, on 19 April 1925 Arellano and the other youths officially established the club, with Luis Contreras choosing the name "Colo-Colo" for the club, in reference to the legendary
cacique (chieftain)
Colo Colo of the
Mapuche people, who fought against the colonial Spaniards in the 16th-century
Arauco War. Initially the team played friendly games, but in 1926 Colo-Colo took part in their first competition, the
Metropolitan League of Honour, where they were proclaimed champions (unbeaten) and earned the nickname of "invincible". The following year, Colo-Colo became the first Chilean football team to participate in a tour across Europe. However, on 2 May, during an exhibition match against
Real Unión Deportiva at
Valladolid, the team founder and captain David Arellano was critically injured after suffering a collision with an opposing player, which caused him
peritonitis. The inflammation led to his death the next day. Despite the great impact caused by Arellano's death, the club won the
Central League of football tournament – then renamed
Asociación de Football de Santiago – in the 1928, 1929 and 1930 seasons. In the 1931–32 season, Colo-Colo suffered its first institutional crisis due to financial problems, which led to a salary reduction for first team footballers and board members, with their consequent resistance. That season the team played another tournament final against
Audax Italiano. However, due to a platform collapse at Estadio Italiano and the subsequent fracas between the fans, it was decided that the game would be suspended. In that moment, Colo-Colo were winning 2–1. That day's tragedy resulted in 130 injuries and three deaths. Other authors however declared that both
Audax Italiano and Colo-Colo were declared champions.
1933–1973: Beginnings in professional football In 1933, Colo-Colo alongside six clubs from
Santiago decided to create the
Chilean professional football league. On 23 July, the team won the
Campeonato de Apertura (
Copa Chile precursor), after defeating 2–1 to
Unión Española. In 1937 the team was undefeated, and reached its first league title. Two seasons later, in 1939, Colo-Colo won the league title for a second time, now under the guidance of the Hungarian coach
Francisco Platko, and with
Alfonso Domínguez as goalscorer with 20 goals in 24 matches. After another title in 1941 with Platko as coach, the club went on to win the titles of 1944 and 1947. The following year Colo-Colo organized the
South American Club Championship –
Copa Libertadores background – in Santiago, which brought together the 1947 continent's champions. In 1945, the club had the worst season in its history, finishing penultimate in eleventh place only ahead of weak
Badminton. In the early 1950s, club's president Antonio Labán hired
Newcastle United striker
George Robledo, paying
£25,000 for its signing. Robledo's performances led the team to the titles of 1953 and 1956. During that age, the club acquired a terrain at
Macul, where began the construction of
Estadio Monumental. Besides the acquisition, the directive invested in a headquarters located at
Santiago Centro (located at Cienfuegos 41) in 1953. The next decade Colo-Colo win the titles of 1960 and 1963. The 1963 team broke two top-tier records:
Luis Hernán Álvarez scored 37 goals in a single season (the highest number of goals scored by a Colo-Colo footballer during a season) The team won its tenth honour in 1970.
Colo-Colo 1973 and 1980s dominance In 1972, under the orders of coach
Luis Álamos and boasting star players in play maker
Francisco Valdés and goal scorer
Carlos Caszely, the club won another championship. It also obtained the country's highest average attendance record of 45,929 people for a single league season. That team was the spine of the aptly-named "Colo-Colo 73" side that captured the nation's heart becoming the first Chilean side to reach a Copa Libertadores final, where it lost to
Independiente of Argentina. After Colo-Colo's brilliant Copa campaign, the club fell into an institutional crisis unable to replicate its success on the pitch failing to win another league title until 1979. That team featured the talented Brazilian midfielder
Severino Vasconcelos alongside Carlos Caszely returning from his stint in Spanish football. Nevertheless, in 1975, the construction of Estadio Monumental was completed and the stadium was inaugurated in a league match against
Deportes Aviación, but due to problems with infrastructure and other basic services the stadium was closed indefinitely. In the 1980s, the club obtained the league titles of 1981 and 1983 with coach
Pedro García, and the 1986 and 1989 honours under
Arturo Salah. The 1987
Alianza Lima air disaster claimed the lives of sixteen players and Colo-Colo was the first to help the Peruvian giants, loaning 4 players. Nonetheless, the team won four Copa Chile titles in that decade. During that period, the greatest disappointment was at continental level with the team only reaching the group stage in the
1988 Copa Libertadores. On 30 September 1989, the Estadio Monumental was re-inaugurated with an exhibition match against
Peñarol, which Colo-Colo won 2–1 and Croatian
Mirko Jozić arrived as coach, leading the team towards its first
Bicampeonato for winning two national championship league titles in a row. On 5 June 1991, after beating
Olimpia 3–0 at the Monumental with two goals scored by
Luis Pérez and one by
Leonel Herrera, Colo-Colo became the first Chilean team to win a
Copa Libertadores. That same season, the "Albos" lost the
Intercontinental Cup final 3-0 against Yugoslav giants
Red Star Belgrade, in Tokyo. At local level, the club won the 1991 league season, its third-consecutive title thus achieving its first
Tricampeonato. The following season, the club won the
Recopa Sudamericana, after beating Brazil's
Cruzeiro in a penalty shootout, and also obtained the
Copa Interamericana, after winning 3–1 against
Puebla in Mexico. The last title won by Jozić in Colo-Colo was the 1993 league title, thus closing a successful spell in South America. After Jozić's departure came a brief drought in national league titles, but the team managed to achieve an unforgettable 3–0 win over arch rivals Universidad de Chile in the 1995 season. Colo-Colo lifted the 1994
Copa Chile title and reached the
1994 Copa Libertadores quarterfinals. The following season saw the arrival of Paraguayan coach
Gustavo Benítez, who obtained the 1996, 1997-C and 1998 league titles. The team advanced to the semifinals of the
Supercopa Libertadores in
1996, and of the Copa Libertadores in
1997, eliminated on both occasions by Cruzeiro. In 1999, Colo-Colo relived its fortunes like in the 1994 season, finishing fourth in the Chilean league and going through three coaches in the same season: Brazilian
Nelsinho Baptista, caretaker coach Carlos Durán and then
Fernando Morena of Uruguay, who remained until 2001.
1999–present: Bankruptcy and recovery In 1999, after Benítez's departure, the club entered a serious financial crisis. On 23 January 2002, after years of economic mismanagement under the leadership of Peter Dragicevic as president, the club was declared bankrupt. A court judge named Juan Carlos Saffie as bankruptcy trustee and administrator responsible for the institution not lose its legal status. Three years later, in 2005, the joint-stock company Blanco y Negro took over the administration, acquiring all club assets for thirty years in exchange for paying all outstanding debts through a concessionaire and undergoing an opening process enlisting at the
Santiago Stock Exchange. and
Clausura tournaments. The squad reached another international final, the
Copa Sudamericana, losing 2–1 to Mexico's
Pachuca. That season,
El Cacique was recognized in the month of October by the
IFFHS as the world's club of the month. The following season Colo-Colo won two more consecutive tournaments, winning a
Tetracampeonato for winning four back-to-back championships, being the first Chilean team to achieve the feat. After Borghi's departure, the club obtained its 28th title defeating
Palestino in the
2008 Torneo de Clausura finals under the coaching of
Marcelo Barticciotto, and with
Lucas Barrios as its top goal scorer, who equaled the goal tally record of Luis Hernán Álvarez scored by a Colo-Colo footballer during a single season with 37 goals. The following season, the club became the first professional team to play in Rapa Nui
Easter Island. After a poor
Torneo de Apertura 2009 – not reaching the play-offs for the first time – "Los Albos" started the Clausura or Closing Championship very poorly and languishing in the table standings in the relegation spots. The team however reached the tournament play-off finals against Universidad Católica, beating them 4–2 at the
Santa Laura, with players like
Esteban Paredes,
Macnelly Torres and
Ezequiel Miralles, coached by
Hugo Tocalli. Colo-Colo's following championship was in
2014 after winning the
Torneo de Clausura. It was the team's 30th Chilean League title. ==Badge, colours and kit==