BARCELONA, Spain-David Nalbandian led South America's first title in their fourth attempt.
Second-ranked Nadal helped Spain defeat France 2-0 in the semifinals to set up until December 2-4 final of the clay surface favored host at the Estadio Olímpico in Seville.
Aside from the rankings 11 Del Potro and Nalbandian, Eduardo Schwank, also in the Argentina squad, while Captain Tito Vazquez will need to trim his team to four players before December 1.
Argentina beat Novak Djokovic of Serbia led 3-2 in the semifinal in Belgrade.
Spain has won 20 straight home series since going down to Brazil in 1999. On clay, Nadal and Ferrer is a combined 25-0.