|Full name||Sergio Leonel Agüero del Castillo|
|Date of birth||2 June 1988|
|Place of birth||Quilmes, Argentina|
|Height||1.72 m (5 ft 7 1⁄2 in)|
|Current club||Manchester City F.C.|
Sergio Leonel "Kun" Agüero del Castillo (Spanish pronunciation: [ˈseɾxjo aˈɣweɾo]; born 2 June 1988) is an Argentine footballer who plays as a striker for Manchester City in England's Premier League and the Argentine national team .
On 5 July 2003 he became the youngest player to debut in the Argentine First Division at 15 years and 35 days, breaking the record previously established by Diego Maradona in 1976, who is Agüero's father-in-law due to his marriage to Maradona's daughter, Giannina.
At international level, Agüero represented the Argentina under-20 team at the FIFA U-20 World Cup in 2005 and in 2007 winning both tournaments. Agüero played at the 2008 Beijing Olympics, he scored two goals in the 3-0 semi-final win against Brazil as Argentina went on to win the gold medal. Agüero was selected to represent Argentina in the 2010 FIFA World Cup and the 2011 Copa América .
In 2006, Agüero moved to Europe to play for La Liga side Atletico Madrid in a fee worth €23m from Independiente. Here he made a name for himself and scored 101 goals in 234 appearances whilst winning a Copa del Rey and the UEFA Europa League. Agüero moved to Premier League club Manchester City in July 2011 for a fee believed to be in the region of £35m.
Sergio Agüero joined the youth system of Club Atlético Independiente aged nine. He then started playing for the Argentine first division team becoming the youngest player to debut in the Argentine First Division at 15 years and 35 days (on 5 July 2003 against Club Atlético San Lorenzo de Almagro), breaking the record previously established by Diego Maradona in 1976. His first goal for the club came in a 2–2 draw against rivals Estudiantes de la Plata on 26 November 2004. Agüero soon became a regular in the first team, earning a place in the Argentina squad for the U-20 World Cup in 2005. Agüero's most famous goal for Independiente came on 11 September 2005 in a 4–0 win against Racing Club de Avellaneda, where he ran from inside his own half before finishing with his left foot. His outstanding performances during the 2005 Torneo Apertura attracted interest from a number of big name European clubs, and after months of speculation, Agüero announced to television cameras in April 2006 that he intended to leave the club at the end of the season.
In May 2006 Agüero signed for Spanish club Atlético Madrid for an undisclosed fee, reported to be around €23 million, breaking the club's previous transfer record. He caused controversy early in his Atlético career by using his hands to score the winning goal against Recreativo Huelva on 14 October 2006, it was only his second goal for the club, the first coming in a 4–1 away win against Athletic Bilbao on September 17. In the 2007–08 season, Agüero finished third in scoring in La Liga, behind Dani Güiza and Luís Fabiano, with 19 goals, and was runner up in the Trofeo Alfredo Di Stéfano award. Kun won many plaudits for his man of the match display against Barcelona in March 2008, scoring twice, assisting a goal, and winning a penalty for Atlético in a 4–2 win. He also scored important goals against the likes of Real Madrid, Valencia, Sevilla and Villarreal to help Atlético finish fourth and qualify for the UEFA Champions League for the first time in over ten years. Agüero was once again a regular goalscorer for Atlético in the 2008–09 season , forming a partnership with Uruguayan striker Diego Forlán, also a former Independiente striker. On September 16, he scored his first Champions League goals in a 3–0 away win at PSV Eindhoven. In March 2009, the duo of Forlán and Agüero scored a brace each in a 4–3 win over league leaders Barcelona. Agüero finished in the top ten runners for the Pichichi Trophy while his teammate Forlán won the trophy. Atlético finished fourth in the league, qualifying for the following season's Champions League. Despite not being as prolific in front of goal, Agüero had another good season in 2009–10, and was praised for his influential performances as Atlético enjoyed their most successful season in over a decade. On 3 November 2009, he scored twice against Chelsea during a 2–2 draw in the Champions League at the Vicente Calderón. Atlético were knocked out of the competition, but went on to reach the final of the 2009–10 UEFA Europa League, where Agüero assisted both goals in a 2–1 extra time win against English club Fulham. He also helped Atlético reach the final of the Spanish Cup, although this time they were not victorious, losing to Sevilla in the Camp Nou on May 19. On 27 August 2010, Atlético Madrid captured the UEFA Super Cup by beating favorites Inter Milan by a score of 2–0. Agüero assisted José Antonio Reyes for the opening goal and then secured the win by scoring the second. On 4 January 2011, Atlético Madrid confirmed via their official website that Agüero had signed a new contract with the club, keeping him at the Vicente Calderón until 2014. The following day he was named as the new vice-captain of Atlético, along with strike partner Diego Forlán. On 23 May 2011, Agüero announced on his official website that he desired a move away from Atlético Madrid