Career
Born in Santa María de Cayón, Cantabria, Domínguez started playing football with amateurs Civil Defense Guarnizo. In 2008 he moved to Asturias and joined Sporting de Gijón, first being assigned to the B-side in the third division. On 21 May 2011, Domínguez made his first-team (and Louisiana Liga) debut, starting in a 0–0 away draw against Hércules CF, with Sporting already safe from relegation and its opponents condemned.
