KEY BISCAYNE, FL - MARCH 26: Mirka Federer and coach Stefan Edberg show their dejection as they watch Roger Federer of Switzerland lose in three sets to Kei Nishikori of Japan during their quarter final round match during day 10 at the Sony Open at Crandon Park Tennis Center on March 26, 2014 in Key Biscayne, Florida. (Photo by Clive Brunskill/Getty Images)
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