Sergio Esteban Riffo Díaz (born March 17, 1997) is a professional Chilean footballer. He was born in Valparaíso and currently plays for San Antonio Unido.
Club career After having no chances to play for Everton de Viña del Mar in the Chilean Primera División, in 2017 he moved to Mexican club Celaya in the Ascenso MX. In 2020, he returned to Chile to play for Primera B side Deportes Valdivia.
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