Answer
Valdez represented Paraguay in two FIFA World Cup tournaments, in 2002 and 2010. In the 2002 tournament, Valdez played in all three of Paraguay's group stage matches, scoring a goal in a 2-2 draw with South Korea. In the 2010 tournament, Valdez again played in all three of Paraguay's group stage matches, scoring a goal in a 2-0 win over New Zealand.