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INDIAN WELLS, CA - MARCH 19: Guillermo Canas of Argentina holds his elbow after falling as he went after a volley in his semifinal match against Roger Federer of Switzerland in the Pacific Life Open at the Indian Wells Tennis Garden on March 19, 2005 in Indian Wells, California. Federer won 6-3, 6-1. (Photo by Jeff Gross/Getty Images)

INDIAN WELLS, CA - MARCH 19:  Guillermo Canas of Argentina holds his elbow after falling as he went after a volley in his semifinal match against Roger Federer of Switzerland in the Pacific Life Open at the Indian Wells Tennis Garden on March 19, 2005 in Indian Wells, California.  Federer won 6-3, 6-1.  (Photo by Jeff Gross/Getty Images)