Two of the world's greatest athletes are in western North Carolina, gearing up for the World Cup of Tennis.
Venus and Serena Williams, who are both members of the U.S. Fed Cup team, were part of a practice held at the U.S. Cellular Center Stadium Court.
The U.S team will face the Netherlands in the World Group First Round on Feb. 10 and 11.
The U.S. team won its 18th Fed Cup title in November after beating Belarus 3-2 in Minsk.
Below is video of the Williams sisters warming up:
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