Sergio Leonel Agüero del Castillo (born 2 June 1988), colloquially known as Kun Agüero, is an Argentine professional footballer who plays as a striker for Premier League club Manchester City and the Argentine national team. He wears “Kun” on his shirt, a childhood nickname based on the title character from the cartoon Kum-Kum. He is widely considered as one of the best strikers of his generation and one of the best players in Premier League history.
Agüero began his career at the Argentine Independiente. On 5 July 2003, he became the youngest player to play in the Argentine Primera División on his debut at 15 years and 35 days, breaking the record previously established by Diego Maradona in 1976. In 2006, he moved to La Liga side Atlético Madrid, for a transfer fee of €23 million. During his years at Madrid, he established himself as one of the best young players in Europe and won the Don Balón Award, Tuttosport Golden Boy and World Soccer Young Player of the Year. He scored 101 goals in 234 appearances for Atlético, while winning the UEFA Europa League and the UEFA Super Cup.
Agüero moved to Premier League club Manchester City in July 2011 for an undisclosed fee in the region of £35 million. On the last day of his debut season with the club, he scored a 94th-minute winner against Queens Park Rangers that earned City its first league title in 44 years. In the 2014–15 season, he won the Premier League Golden Boot. In November 2017, Agüero became Manchester City’s all-time highest goal-scorer, scoring his 178th City goal against Napoli. He was named to the PFA Team of the Year in 2017–18 and 2018–19. He is currently the 4th highest goalscorer in Premier League history, and the highest non-English scorer in the history of the competition, with 181 goals in the division. He also holds the record for most hat-tricks in the Premier League, with twelve.
At the international level, Agüero represented the Argentina under-20 team at the FIFA U-20 World Cup in 2005 and in 2007, winning both tournaments. He played at the 2008 Beijing Olympics, scoring 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 the senior team in the 2010 FIFA World Cup, the 2011 Copa América, the 2014 FIFA World Cup, the 2015 Copa América, and the Copa América Centenario, reaching the finals of the latter three tournaments. He also participated in the 2018 FIFA World Cup, where he scored his first and second World Cup goals for Argentina, and the 2019 Copa América.