Sergio Leonel "Kun" Agüero Del Castillo (born 2 June 1988) is an Argentine professional footballer who plays as a striker for English club Manchester City and the Argentina national team. On 5 July 2003, he became the youngest player to debut in the Argentine Primera División at 15 years and 35 days, breaking the record previously established by Diego Maradona in 1976. He plays with the shirt name Kun Agüero.

On 21 April 2014, Agüero scored his first goal since January in a 3–1 defeat of West Bromwich Albion at the City of Manchester Stadium.