NEW YORK (Reuters) - Injured Venus Williams will join her sister Serena on the Fed Cup sidelines with Vania King named to take her place on the U.S. team that will play the quarter-finals in Antwerp against Belgium.
At number 48, Mattek-Sands is the highest-ranked player on the U.S. squad.
Fifth-ranked Venus, a seven-time grand slam singles champion, was expected to be on the squad before injuring her hip last week during the Australian Open.
(Writing by Larry Fine, Editing by Steve Ginsburg)
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