Agüero represented Argentina at two FIFA World Youth Championships, winning back-to-back world titles. He was part of the team that won the 2005 edition in the Netherlands, alongside his future 2008 Olympics squad teammates Fernando Gago and Lionel Messi. At the 2007 FIFA U-20 World Cup, held in Canada, Agüero scored twice and helped set up three goals in a 6–0 win over Panama in the second game of the group stage of the tournament. He then scored the only goal in Argentina's third match against North Korea from a free kick. Having qualified to the round of 16, he scored two of the three goals against Poland that would eventually give them a 3–1 win to advance to the next round. Argentina defeated Mexico in the quarter-finals and Chile in the semi-finals, and faced the Czech Republic in the finals, a team they drew 0–0 in the group stage. Agüero captained and scored the equaliser in the 62nd minute, leading to a 2–1 victory. In addition, Agüero won the Golden Boot of the tournament, scoring six goals in seven, and the Golden Ball as the best player of the tournament.