On 20 May 2009 Pozo made his debut with Argentina in a 3–1 friendly match victory against Panama. The Argentine team was made up of players based in the Argentine Primera División. He also played the friendlies against Ghana and Haiti, as well as the unofficial friendly against Catalonia. Pozo had a poor performance at the aforementioned unofficial friendly. Subsequently, he was called up for the 2010 FIFA World Cup Argentine squad as the third goalkeeper.