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MADRID, SPAIN - MAY 12: Serena Williams of the US and runner up Maria Sharapova of Russia stand with their trophies after the final match on day nine of the Mutua Madrid Open tennis tournament at the Caja Magica on May 12, 2013 in Madrid, Spain. (Photo by Gonzalo Arroyo Moreno/Getty Images)

MADRID, SPAIN - MAY 12:  Serena Williams of the US and runner up Maria Sharapova of Russia stand with their trophies after the final match on day nine of the Mutua Madrid Open tennis tournament at the Caja Magica  on May 12, 2013 in Madrid, Spain.  (Photo by Gonzalo Arroyo Moreno/Getty Images)