Cardozo earned 82 caps for Paraguay between 1991 and 2006, putting him ninth in their most-capped players of all time, with his haul of 25 international goals the second most for the nation.Cardozo, while on loan for the tournament, was also a main catalyst and goalscorer for runner-up Cruz Azul in the 2001 Copa Libertadores defeat to Buenos Aires club Boca Jr.Born in Nueva Italia in the Central Department, Cardozo began his professional career in 1988, making his debut for River Plate of Paraguay.He moved to the 4th spot in the list of all-time top scorers in the Mexico Primera Division after Jared Borgetti scored his 250th goal with Monarcas Morelia.Despite the fact that he was fiercely opposed to the move, Cardozo was transferred to Argentine team San Lorenzo de Almagro in June 2005, and finished the season with only 4 goals due to injuries that kept him away from playing several games.[3] Cardozo was the all-time leading scorer for the Paraguay national team, with 25 goals, until 2013, with the record being broken by Roque Santa Cruz.On 4 August, before the Summer Olympics began, he played in a preparation game against the Portugal of Cristiano Ronaldo in the city of Algarve, resulting in a 5–0 defeat.