Germany's Angelique Kerber ponders during a break between games in her women's singles semi-final match against Poland's Agnieszka Radwanska on day 10 of the 2012 Wimbledon Championships tennis tournament at the All England Tennis Club in Wimbledon, southwest London, on July 5, 2012. AFP PHOTO / GLYN KIRK RESTRICTED TO EDITORIAL USE (Photo credit should read GLYN KIRK/AFP/GettyImages)