MELBOURNE, AUSTRALIA - JANUARY 26:  Roger Federer of Switzerland waves to the crowd after losing his semifinal match against Rafael Nadal of Spain during day eleven of the 2012 Australian Open at Melbourne Park on January 26, 2012 in Melbourne, Australia.  (Photo by Clive Brunskill/Getty Images)

American Upsets Fed at Davis Cup

By Michael Dixon (Photo: Clive Brunskill/Getty Images)

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SHANGHAI, CHINA - OCTOBER 13:  Roger Federer of Switzerland shakes hand with John Isner of USA after their match during day three of the 2010 Shanghai Rolex Masters at the Shanghai Qi Zhong Tennis Center on October 13, 2010 in Shanghai, China.  (Photo by Victor Fraile/Getty Images)

John Isner Defeats Roger Federer in Four Sets in Davis Cup Shocker

by Nicholas Nemeroff

Coming in to their opening-round tie in the 2012 Davis Cup, the United States anticipated having to formulate a purely magical tie in Switzerland in order to defeat a formidable Swiss side that includes just Stanislas Wawrinka and Roger Federer ...