The best-of-three series was tied at one match each after the singles play, leaving the doubles to decide the championship.
Acasuso and Calleri went against the Czech tandem of Tomas Berdych and Martin Damm, dropping the first set 2-6. The Argentines won the final four games to take the second set 6-4. That set up the first-to-10 match tiebreaker, which the Argentine twosome won 10-4.
T he Czechs won the four-nation Blue Group in round-robin play with a perfect 3-0 record.
Argentina won for the third time, having also won in 1980 and 2002.
Notable deaths of 2014 [PHOTOS]