Pozo began his professional career in 1995 at the time unterklassigen Club CD Godoy Cruz. After ten years he decided to leave the club and moved to Club Atlético Huracán. At the end of the 2005 /06 managed the team to a relegation place in the second division. This one was entitled to play División for the promotion to the Primera against Argentinos Juniors. By a 1-1 before the home crowd and a 2-2 away, the rise was missed because the rules said that a Erstligateam is preferably treated in the play- off matches, after two draws. Pozo left on the club and signed during Premier League rivals Talleres de Córdoba. Again, a season Stäter he exchanged the jersey Talleres against the city rivals Instituto Atlético Central Córdoba. For the season 2008/ 09 the first division club Colón lured him to Santa Fe. It was the first first division club, at the Pozo a contract signed. He quickly made it into the starting eleven of the club and developed into a service provider. His debut in the highest Argentine league he was doing on matchday 11 of the Torneo Apertura, October 25, 2008, against CA Velez Sarsfield. From then on he remained first-choice goalkeeper at his new club. In his second year in Santa Fe, the team managed a place in the qualification for the Copa Libertadores 2010., But there is difference then against the Paraguayan representative CD Universidad Católica 3-2 and 2:3 after penalty shoot- out.
The good performances since his move to the premier league, Pozo helped a late career in the Argentine national team. On 20 May 2009 the keeper was in a 3-1 win against Panama his debut in the dress of his native country. A year later he was appointed national coach Diego Maradona in the squad for the FIFA World Cup 2010 in South Africa Before the World Cup itself Pozo was the equally inexperienced, but younger Sergio Romero and Mariano Andujar in the battle for position in the goal. However, he came to no use at the World Championships, as Romero all five games played.