Serbia's Novak Djokovic appeals a decision during his men's singles quarter-final match against Croatia's Marin Cilic on day nine of the 2014 Wimbledon Championships at The All England Tennis Club in Wimbledon, southwest London, on July 2, 2014. Djokovic won 6-1, 3-6, 6-7, 6-2, 6-2. AFP PHOTO / CARL COURT - RESTRICTED TO EDITORIAL USE (Photo credit should read CARL COURT/AFP/Getty Images)
