DOHA, Qatar With the No. 1 ranking and her first major title secured, Victoria Azarenka is already thinking about the "Golden Slam."

World No. 6 Jo-Wilfried Tsonga breezed past Frank Dancevic on Sunday and sent France to a Davis Cup quarterfinals meeting with the United States.

The United States had already clinched a victory over host Switzerland in their best-of-five Davis Cup tie before capping off the weekend on Sunday with two more singles wins in a 5-0 sweep in Fribourg.

VANCOUVER, British Columbia Canada's Milos Raonic was replaced for a key Davis Cup singles match against France on Sunday because of a knee injury. His spot was taken by Frank Dancevic, who faces Jo-Wilfried Tsonga.

Jurgen Melzer was the hero on Sunday, as he straight-setted Alex Bogomolov Jr. to propel Austria past Russian and into its first Davis Cup quarterfinal since 1995.

PARIS Martina Navratilova expects a compelling rivalry to develop between Australian Open champion Victoria Azarenka and Wimbledon winner Petra Kvitova.

Serbia needed only one victory on Sunday against Sweden, and world No. 9 Janko Tipsarevic did not waste any time in the first reverse singles rubber as he helped the 2010 champions beat Sweden 4-1 in a best-of-five opening-round Davis Cup affair.

Reigning champion Spain cruised into the Davis Cup quarterfinals with a 5-0 drubbing of visiting Kazakhstan this week.

German Angelique Kerber captured her first- ever WTA title by upsetting French crowd favorite Marion Bartoli in Sunday's final at the Open GDF Suez tennis event.

PATTAYA, Thailand Slovakia's Daniela Hantuchova won her second straight Pattaya Open title Sunday, defeating Russia's Maria Kirilenko 6-7 (4), 6-3, 6-3.

NIS, Serbia Janko Tipsarevic beat Michael Ryderstedt of Sweden in straight sets Sunday to send Serbia to the Davis Cup quarterfinals against the Czech Republic.

PARIS Angelique Kerber of Germany won her first WTA title Sunday, overpowering second-seeded Marion Bartoli of France 7-6 (3), 5-7, 6-3 in the Open GDF Suez final.

FRIBOURG, Switzerland The United States completed its 5-0 rout of Switzerland in the first round of the Davis Cup on Sunday, with 19-year-old Ryan Harrison and John Isner winning the closing singles matches.

Argentina settled for a 4-1 victory over host Germany in a best-of-five opening-round Davis Cup matchup.

The host Czech Republic advanced to the Davis Cup quarterfinals with an easy 4-1 victory over Italy this week.

HYOGO, Japan Big-serving Ivo Karlovic beat Go Soeda 7-6 (4), 6-1, 6-4 Sunday, sending Croatia past Japan 3-2 and into the quarterfinals of the Davis Cup.

Daniela Hantuchova defended her title as she defeated Maria Kirilenko in the Sunday final at the Pattaya Open.

Ivo Karlovic defeated Go Soeda in the final match as Croatia downed host Japan, 3-2, to advance in the Davis Cup.

Russia remained alive in the Davis Cup against Austria on Saturday as the doubles team of Nikolay Davydenko and Mikhail Youzhny earned a five-set victory over Alexander Peya and Oliver Marach.

WIENER NEUSTADT, Austria Jurgen Melzer eased past Alex Bogomolov Jr. of Russia 6-2, 6-4, 6-1 Sunday to help Austria reach the quarterfinals of the Davis Cup for the first time since 1995.

BAMBERG, Germany Cedrik-Marcel Stebe salvaged some pride for Germany, beating Eduardo Schwank 7-6 (1), 7-5 Sunday in a consolation win against Argentina in the first round of the Davis Cup.

NIS, Serbia Janko Tipsarevic beat Michael Ryderstedt of Sweden in straight sets Sunday to send Serbia to the Davis Cup quarterfinals against the Czech Republic.

The United States Davis Cup team clinched a stunning first-round win against Switzerland on Saturday when the doubles tandem of Mike Bryan and Mardy Fish notched a four-set victory over the Swiss duo of Roger Federer and Stanislas Wawrinka.

OVIEDO, Spain Defending champion Spain secured its place in the Davis Cup quarterfinals by winning the doubles against Kazakhstan for a 3-0 lead Saturday.

OSTRAVA, Czech Republic Simone Bolelli defeated substitute Frantisek Cermak 6-4, 6-4 for Italy's lone consolation win against the Czech Republic in the first round of the Davis Cup on Sunday.

PATTAYA, Thailand Slovakia's Daniela Hantuchova won her second straight Pattaya Open title, defeating Russia's Maria Kirilenko 6-7 (4), 6-3, 6-3.

FRIBOURG, Switzerland The United States completed a 5-0 rout of Switzerland in the Davis Cup on Sunday, with 19-year-old Ryan Harrison and John Isner winning closing singles matches.

HYOGO, Japan Ivo Karlovic and Ivan Dodig beat Tatsuma Ito and Yuichi Sugita 6-4, 6-4, 3-6, 6-3 Saturday to give Croatia a 2-1 lead over Japan in their first-round Davis Cup World Group series.

HYOGO, Japan Ivo Karlovic and Ivan Dodig beat Tatsuma Ito and Yuichi Sugita 6-4, 6-4, 3-6, 6-3 Saturday to give Croatia a 2-1 lead over Japan in their first-round Davis Cup World Group series.

MADRID Rafael Nadal says he underwent a surprise drug test toward the end of a week in which the Spaniard was the butt of jokes by a French TV program about his country's alleged ties to doping.

FRIBOURG, Switzerland Mardy Fish will partner with Mike Bryan in the doubles match Saturday as the United States seeks to sweep Roger Federer's Switzerland out of the Davis Cup.

VANCOUVER, British Columbia Michael Llodra and Julien Benneteau beat Daniel Nestor of Toronto and Milos Raonic 7-6 (1), 7-6 (2), 6-3 on Saturday to give France a 2-1 lead over Canada in their Davis Cup match.

Frenchman Jo-Wilfried Tsonga made quick work of Vasek Pospisil while Canadian rising star Milos Raonic shut down Julien Benneteau in Friday's opening Davis Cup singles rubbers.

PARIS Marion Bartoli of France and Angelique Kerber of Germany won semifinal matches Saturday and will play for the title at the Open GDF Suez.

Capable German Angelique Kerber upset top- seeded Maria Sharapova in Friday's quarterfinal action at the Open GDF Suez.

World No. 7 Tomas Berdych and countryman Radek Stepanek gave the Czech Republic a 2-0 lead in Friday's opening singles rubbers against visiting Italy.

OSTRAVA, Czech Republic Tomas Berdych and Radek Stepanek won the opening singles matches Friday, sending the Czech Republic to a 2-0 lead over Italy in the first round of the Davis Cup.

OVIEDO, Spain Spain showed it can win without Rafael Nadal, with the defending Davis Cup champions taking a 2-0 lead over Kazakhstan on Friday behind victories by Juan Carlos Ferrero and Nicolas Almagro.

WHITE PLAINS, N.Y. Jim Curley is stepping down as tournament director for tennis' U.S. Open, a post he's held since 2001.

Reigning champion Spain began defense of its Davis Cup title with a pair of singles wins Friday in an opening-round Davis Cup matchup with visiting Kazakhstan.

NEW YORK Caroline Wozniacki is keeping her dad as coach.

NIS, Serbia Serbia took a 2-0 lead over Sweden in the first round of the Davis Cup on Friday after Janko Tipsarevic defeated Filip Prpic and Viktor Troicki beat Michael Ryderstedt.

Last year's runner-up Argentina got opening singles wins from David Nalbandian and Juan Monaco on Friday, as the host Germans trail their South American counterparts 2-0 in a best-of-five opening-round Davis Cup affair.

Playing without its world No. 1 superstar Novak Djokovic, Serbia jumped out to a commanding 2-0 lead over visiting Sweden in a best-of-five opening-round Davis Cup affair.

Wimbledon champion Petra Kvitova will not play in next week's Qatar Ladies Open due to an unspecified injury.

DUBAI, United Arab Emirates Wimbledon Open champion Petra Kvitova has pulled out of the Qatar Ladies Open because of an unspecified injury.

FRIBOURG, Switzerland First, Mardy Fish put together a compelling rally to get the United States off to a fast start. Then John Isner bashed his way to a big upset.

Mardy Fish outlasted Stanislas Wawrinka in a five-set thriller Friday, as the visiting United States grabbed a 1-0 lead against Switzerland in their best-of-five opening-round Davis Cup showdown.

HYOGO, Japan Ivo Karlovic beat Kei Nishikori 6-4, 6-4, 6-3 Friday to give Croatia a split against Japan in the first round of the Davis Cup.

Defending champion Daniela Hantuchova was among the quarterfinal winners Friday at the Pattaya Open, while two-time winner Vera Zvonareva was forced to retire from her match because of a hip injury.