Maria Sharapova has been forced to withdraw with a leg injury . Russia host Germany in the Fed Cup semi-finals in Sochi this weekend . Venus Williams has also pulled out because of a personal matter . The USA travel to face Italy in a the Russian Tennis Federation play-off in Brindisi .
Maria Sharapova has been forced to withdraw with a leg injury . Russia host Germany in the Fed Cup semi-finals in Sochi this weekend . Venus Williams has also pulled out because of a personal matter . The USA travel to face Italy in a World Group play-off in Brindisi .