Defensive midfielder who played for Real Madrid from 2007 to 2011 and joined the Argentine national team in 2007.
He played his youth career with the Boca Juniors from 1991–2004.
He joined the Valencia football club in 2012 on a deal of close to 3.5 million Euros.
He married Gisela Dulko, a professional tennis player, in 2011.
He and Sergio Aguero both played on the Argentine national team that won gold at the 2008 Olympic Games.