Serena Williams celebrates winning a point in the third set of her 5-7, 6-1, 6-1 victory over Anastasia Yakimova of Belarus in February in Worcester, Mass. The victory by Williams clinched the Fed Cup victory for the United States.

Anastasia Yakimova struggles to return a ball against Serena Williams.

US player Christina McHale sets up for a big forehand during her 6-0, 6-1 victory over Darya Kustova of Belarus.

Darya Kustova gets support from Belarus captain Tatiana Poutchek during her Fed Cup loss to American Christina McHale.

Serbia's Fed Cup team members — from left to right, Bojana Jovanovski, Natalija Kostic, team captain Dejan Vranes, Aleksandra Krunic and Jelena Jankovic — celebrate their 3-2 victory over Belgium in a World Group match in Charleroi, Belgium. The victory moved Serbia into the semifinals.

Germany's Sabine Lisicki reacts during her loss to Petra Kvitova of the Czech Republic at the World Group Fed Cup matches in Stuttgart, Germany. The Czech Republic won 4-1 to reach the semifinals.

Belgium's Yanina Wickmayer reacts during her match against Serbia's Aleksandra Krunic in Fed Cup World Group action at Charleroi, Belgium, on Feb. 5. Wickmayer won both her singles matches but Serbia prevailed 3-2 by winning every other match.

Australia captain David Taylor, right, and Jarmila Gajdosova celebrate after a Fed Cup World Group 2 match between Switzerland and Australia at Fribourg, Switzerland, on Feb. 5. Gaidosova won 6-3, 3-6, 8-6 against Amra Sadikovic to clinch Australia's victory.

Serbia's Bojana Jovanovski, left, shakes hands with Belgium's Kirsten Flipkens after Jovanovski won her match, during Fed Cup World Group play at Charleroi, Belgium on Feb. 5. Serbia won the first-round competition 3-2.

Russia's Svetlana Kuznetsova reacts during a Fed Cup World victory over Spain's Silvia Soler-Espinosa in Moscow on Feb. 5. Kuznetsova later teamed with Nadia Petrova in doubles for a victory that clinched Russia's 3-2 victory.

The Czech Republic's Petra Kvitova celebrates after winning against Sabine Lisicki from Germany during a World Group Fed Cup first-round match in Stuttgart, Germany on Feb. 5.

Russia's Maria Sharapova returns to Fed Cup play leading Russia to a 2-0 lead over Spain with a win over Slvia Soler-Espinosa in Moscow on Feb. 4.

United States' Serena Williams returns a ball to Olga Govortsova, of Belarus, during a first round US Fed Cup tennis match in Worcester, Mass., Saturday, Feb. 4, 2012. Williams beat Govortsova 7-5, 6-0.

Petra Kvitova of Czech Republic returns the ball to Germany's Julia Goerges during the first-round Fed Cup World Group tennis match between Germany and Czech Republic in Stuttgart, Germany on Saturday, Feb. 4. Kvitova won the match to give the Czech Republic a 2-0 lead.

United States' Christina McHale returns the ball to Anastasia Yakimova, of Belarus, during a first round Fed Cup tennis match in Worcester, Mass., Saturday, Feb. 4, 2012. McHale defeated Yakimova 6-0, 6-4.

Switzerland's Stefanie Voegele returns a ball to Australia's Jarmila Gajdosova during the Fed Cup World Group 2 first round tennis match in the Forum Arena in Fribourg, Switzerland, Saturday, Feb. 4, 2012. Voegele won the match 6-0, 6-7, 8-6.

Julia Goerges returns the ball to Petra Kvitova during Germany's first-round World Group Fed Cup tennis match against the Czech Republic in Stuttgart, Germany. Kvitova won the match giving the Czech Republic an early 2-0 lead.

Serbia's Bojana Jovanovski returns the ball towards Belgium's Yanina Wickmayer, during the World Group, first round of the Fed Cup tennis, in Charleroi, Belgium, Saturday, Feb. 4, 2012.