The 2012 Wimbledon championships in London, June 25, 2012. UPI/Hugo Philpott
American Andy Roddick returns in his match against England's Jamie Baker on the second day of the 2012 Wimbledon championships in London, June 26, 2012. UPI/Hugo Philpott
Spain's Rafael Nadal returns in his match against Brazil's Thomaz Bellucci on the second day of the 2012 Wimbledon championships in London, June 26, 2012. UPI/Hugo Philpott
American Serena Williams returns in her match against Barbora Zahlavova Strycova on the second day of the 2012 Wimbledon championships in London, June 26, 2012. UPI/Hugo Philpott