LONDON, ENGLAND - JUNE 28:  Maria Sharapova of Russia (R) shakes hands with Tsvetana Pironkova of Bulgaria after defeating her in their Ladies' Singles second round match on day four of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on June 28, 2012 in London, England.  (Photo by Clive Brunskill/Getty Images)