Lionel and summer olympics 2008

Having barred Messi from playing for Argentina in the 2008 Olympics, Barcelona agreed to release him after he held talks with newly appointed coach Pep Guardiola. He joined the Argentina squad and scored the first goal in a 2–1 victory over Ivory Coast. He then scored the opening goal and assisted Ángel di María in the second to help his side to a 2–1 extra-time win against the Netherlands. He also featured in Argentina's match against rivals Brazil, in which Argentina took a 3–0 victory, thus advancing to the final. In the gold medal match, Messi again assisted Di María for the only goal in a 1–0 victory over Nigeria.

Lionel Messi and World Cup 2006

The injury that kept Messi from playing for two months at the end of the 2005–06 season jeopardised his presence in the 2006 World Cup. Nevertheless, Messi was selected in the Argentina squad for the tournament on 15 May 2006. He also played in the final match before the World Cup against the Argentine U-20 team for 15 minutes and a friendly match against Angola from the 64th minute. He witnessed Argentina's opening match victory against Ivory Coast from the substitute's bench. In the next match against Serbia and Montenegro, Messi became the youngest player to represent Argentina at a World Cup when he came on as a substitute for Maxi Rodríguez in the 74th minute. He assisted Hernán Crespo's goal within minutes of entering the game and also scored the final goal in the 6–0 victory, making him the youngest scorer in the tournament and the sixth youngest goalscorer in the history of the World Cup. Messi started in Argentina's following 0–0 draw against the Netherlands. In the following game against Mexico, Messi came on as a substitute in the 84th minute, with the score tied at 1–1. He appeared to score a goal, but it was ruled offside with Argentina needing a late goal in extra time to proceed. Coach José Pekerman left Messi on the bench during the quarter-final match against Germany, which they lost 4–2 on a penalty shootout.