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HALLE, GERMANY - JUNE 15: Milos Raonic of Canada serves during his match against Roger Federer of Switzerland during day five of the Gerry Weber Open at Gerry Weber Stadium on June 15, 2012 in Halle, Germany. (Photo by Thomas Starke/Bongarts/Getty Images)

HALLE, GERMANY - JUNE 15:  Milos Raonic of Canada serves during his match against Roger Federer of Switzerland  during day five of the Gerry Weber Open at Gerry Weber Stadium on June 15, 2012 in Halle, Germany.  (Photo by Thomas Starke/Bongarts/Getty Images)