 He then spent one year in Mexico with Tigres de la UANL.In 2008, Fernández returned to Argentina to play for Estudiantes de La Plata, where he finished as runner up with the team in the 2008 Copa Sudamericana.He was then a first team regular in the team that won the 2009 Copa Libertadores, where he scored the equalising goal in the second leg of the final against Cruzeiro.