Tennis

Ivan Dodig and Ivo Karlovic downed the Japanese tandem of Tatsuma Ito and Yuichi Sugita on Saturday to give Croatia a 2-1 lead in the Davis Cup.

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.

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.

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.

In one of the greatest Davis Cup upsets in recent memory, John Isner shocked the great Roger Federer in four sets to give the United States a commanding 2-0 lead over host Switzerland in their best-of-five opening-round Davis Cup battle.

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 Open due to an unspecified injury.

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

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.