In May 2014, Fernández underwent an ankle surgery on his right foot, thus being unable to participate in that year's World Cup. He was included in the Chilean squad for the 2015 Copa América, being sent off in the opening match, a 2–0 win over Ecuador at the Estadio Nacional in Santiago; after having come as a 75th-minute substitute for Jorge Valdivia, he was one of four players on target in the final against Argentina, which ended 4–1 in a penalty shootout.