On 26 July 2009, Aguirre led Mexico to its fifth Gold Cup title and its first win against the United States outside of Mexico since 1999. He then led Mexico to a comeback win over the same opposition at the Estadio Azteca on 12 August 2009 and followed it up by winning 3–0 in Costa Rica, putting Mexico closer to a qualifying spot for the World Cup that seemed to be an impossible task at the time when Eriksson was sacked. On 10 October 2009, Mexico beat El Salvador in the Estadio Azteca 4–1, qualifying Mexico for the 2010 FIFA World Cup.