LONDON, ENGLAND - JULY 28:  Sabine Lisicki and Angelique Kerber of Germany play against Heather Watson and Laura Robson of Great Britain during their Women's Doubles Tennis Match on Day 1 of the London 2012 Olympic Games at the All England Lawn Tennis and Croquet Club in Wimbledon on July 28, 2012 in London, England.  (Photo by Clive Brunskill/Getty Images)