Career
Not to be confused with Gonzalo Castro Irizábal, a Uruguayan football player. Club career
= Bayer Leverkusen Other stations during his youth were Viktoria Rott and SV Bayer Wuppertal. In 1999, he moved to Bayer 04 Leverkusen.
At 17, he played his first game for the senior team from Leverkusen in the Bundesliga and in the Champions League.
In his first year he played as many as in 13 matches and was from matchday 24 always on the pitch. Although he had played 21 times in the 2005-2006 season, he was only a reserve player, especially in the second half of the season and was incidentally also used in the second team
From 2006, Castro then moved from midfield to the back four of Leverkusen and played with solid performances in the starting eleven. Four years in a row he was largely undisputed.
Only in the 2010-2011 season, he saw his place on the right side of defense disputed by Daniel Schwaab.
Since the 2012-2013 season, Castro plays again in midfield. Castro trained as a sports and fitness administrator at Bayer 04 Leverkusen. = Borussia Dortmund On 24 May 2015, it was announced that Castro would join Borussia Dortmund after a transfer release clause of 11 million was met, signing a four-year deal.
International career
In his youth, Castro was invited by the Spanish Football Federation invited for various courses.
He played a single match for a Spanish junior selection and chose at the age of 18 to play for the German Football Association. Castro has played for the German national U-21 team at the 2006 Union of European Football Associations European Under-21 Football Championship.
In the three test caps at the beginning of 2006, Castro gained a place in the German squad for the finals of the U-21 European Championship 2006 in Portugal. There he delivered solid performances.
His biggest footballing success was winning the U-21 Championship 2009 in Sweden under coach Horst Hrubesch.
In a 4–0 victory in the final against England, Castro scored the first goal in the 23rd minute. In the European Championship qualifier against the Czechoslovakian Republic on 24 March 2007, Castro was called up to the senior squad for the first time and Four days later, he made his debut against Denmark. This was followed by four more international appearances.
Since then, Castro has never featured in the national squad.