Sergio Herrera Pirón is a Spanish footballer who plays as a goalkeeper. Born in Miranda de Ebro, Burgos, Castile and León, Herrera finished his graduation with Deportivo Alavés' youth setup and made his senior debuts with the reserves in the 2011–12 campaign, in Tercera División. On November 2012 he made his first team debut against FC Barcelona. Herrera appeared in only one further match with the main squad (who achieved promotion to Segunda División) before being loaned out to CD Laudio on 23 July 2013. In summer 2016 he signed a three-year contract with SD Huesca in the second tier. On 20 August Herrera made his professional debut, starting and keeping a clean sheet in a 0–0 away draw against AD Alcorcón. On 12 July 2017 Herrera signed a four-year deal with CA Osasuna.