While at FC Barcelona, Fernández also played three times for the Catalan XI. On 19 January 1936 at the Les Corts, he played in a testimonial for Josep Samitier against SK Sidenice of Czechoslovakia. Other players in the Catalan XI that day included Sagibarba and Balmanya. His playing career at FC Barcelona was ended by the Spanish Civil War. When the war started, he was in Montevideo and the club advised him to stay there.
Coaching career
After retiring as a player due to a serious knee injury, Fernández began coaching and in 1946 he guided Nacional to a Uruguayan championship. In 1947 he returned to La Liga to coach CF Barcelona. With a squad including Velasco, Ramallets and Estanislao Basora, he helped the club win two La Liga titles in 1948 and 1949. During his third season the club also won its first ever major international trophy, the Latin Cup. Despite this, CF Barcelona could only finish fifth in La Liga and he was replaced the following season by Fernando Daucik.
Fernández also managed Real Betis for 10 games during the 1959–60 season. In July 1961 he also coached Uruguay in two World Cup qualifying games against Bolivia