US players Venus Williams (L) and Serena Williams rest between sets their women's doubles second first round match against Georgia's Oksana Kalashnikova and Ukraine's Olga Savchuk on day three of the 2014 Wimbledon Championships at The All England Tennis Club in Wimbledon, southwest London, on June 25, 2014. AFP PHOTO / ANDREW COWIE  - RESTRICTED TO EDITORIAL USE        (Photo credit should read ANDREW COWIE/AFP/Getty Images)