The Berdych-led Czech team will meet Argentina on Saturday in two singles and one doubles match. Whichever team wins two matches takes the title.
The Czech Republic is looking for its first World Team title since 1987. The team was 3-0 in round-robin play this week. Argentina was 2-1 in its group play but made the finals on beating Chile in head-to-head competition. The Argentines won this tournament in 1980 and 2002.
Berdych got the Czech going Friday with a 6-3, 6-2 win over Germany's Philipp Kohlschreiber. Jan Hajek topped Florian Mayer 7-6 (7-4), 6-2 to lock up the point before Berdych teamed with Martin Damm for a 6-4, 6-4 doubles victory over Benjamin Becker and Michael Kohlmann to complete the sweep.