"I'm on cloud nine, as you can see with everything that's has been happening lately on the tennis court," Djokovic said following his 13th straight match victory. Djokovic said he was fully committed to helping the 2010 Davis Cup champions in their quest for a second title in the premier men's team competition. "At the beginning of the season I said the Grand Slams and playing for my country were my priorities. Over in Manchester, an emotional Andy Murray gave Britain a 1-0 lead over Switzerland by outlasting Leandro Riedi 6-7(7) 6-4 6-4 and later revealed he missed his grandmother's funeral to play in the Group B clash. Reporting by Shrivathsa Sridhar in Bengaluru; Editing by Ken Ferris and Pritha SarkarOur Standards: The Thomson Reuters Trust Principles.

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Persons: Novak Djokovic, Djokovic, Alejandro Davidovich Fokina, Laslo Djere, Albert Ramos, that's, I'm, Andy Murray, outlasting Leandro Riedi, Stan Wawrinka, Cameron Norrie, Dominic Stricker, Dan Evans, Neal Skupski, Matteo Arnaldi, Cristian Garin 2, Lorenzo Sonego, Nicolas Jarry, Otto Virtanen, Dino Prizmic, Emil Ruusuvuori, Borna, Shrivathsa Sridhar, Ken Ferris, Pritha Organizations: U.S, Davis, Spain, Serbia, Malaga, Serbian, Britain, Croatia, Thomson Locations: VALENCIA, Spain, Serbia, New York, Valencia, Malaga, Czech Republic, we're, Manchester, Switzerland, Swiss, Italy, Bologna, Chile, Finland, Split, Netherlands, Bengaluru