|Full name||Sergio Aguza Santiago|
|Date of birth||2 September 1992|
|Place of birth||Sant Boi de Llobregat, Spain|
|Height||1.75 m (5 ft 9 in)|
|Real Madrid B|
|2011–2013||Real Madrid C||57||(8)|
|2013–||Real Madrid B||43||(6)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 20 April 2015.
† Appearances (Goals).
Aguza was born in Sant Boi de Llobregat, Barcelona, Catalonia. After playing youth football with EF Gavà and UD Cornellà, he joined Real Madrid's youth facilities in 2008, aged 16. In 2011–12 season Aguza made his senior debuts, playing for the C-team in Tercera División. In July 2013, he was promoted to the reserves in Segunda División.
On 8 September Aguza made his professional debut, starting in a 0–1 home loss against CD Mirandés. He scored his first goal on 15 February of the following year, netting his side's second in a 3–1 home success against FC Barcelona B.
- El Castilla, como un equipo de fútbol sala (Castilla, like an indoor football team); Marca, 11 July 2013 (Spanish)
- El Mirandés se pone líder a costa de un filial que sigue sin puntuar (Mirándes becomes leader at the expense of a reserve team which remains without points); Marca, 8 September 2013 (Spanish)
- La intensidad del Castilla desmonta el orden del Barça B (Castilla's intensity dismounts Barça B's order); Marca, 15 February 2014 (Spanish)
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