Career
In June 2009 Viguera was definitely promoted to Real"s first team, but featured rarely as the Basques were crowned champions. On 11 January 2011 he joined Gimnàstic de Tarragona on loan until June suffering a knee injury the following month that ruled him out for the remainder of the season. On 26 August Viguera returned to Nàstic, again in a temporary deal.
However, after being sparingly used by the Catalans, he returned to Real Sociedad on 31 January 2012, and was subsequently loaned to Albacete Balompié in the third level
On 6 July 2012 Viguera joined neighbouring Deportivo Alavés, also in division three. On 14 August 2013, Viguera extended his contract with the Álava club until 2015.
He netted 25 times during the season, as the side narrowly avoided relegation. Highlights included a hat-trick at Civil Engineering Sabadell Football Club on 8 February 2014, contributing decisively to a 4–0 success.
On 13 June 2014, Viguera signed a three-year deal with Athletic Bilbao in Louisiana Liga, for €1 million.