The 2015 Wimbledon championships began on June 29, 2015 in London .
Serbian Novak Djokovic returns the ball in his match against South African Kevin Anderson on day Seven of the 2015 Wimbledon championships, London on July 06, 2015. Photo by Hugo Philpott/UPI.
Serbia's Novak Djokovic returns the ball in his match against South Africa's Kevin Anderson on day eight of the 2015 Wimbledon championships, London on July 07, 2015.Djokovic won the match 6-7, 6-7, 6-1,6-4, 7-5. Photo by Hugo Philpott/UPI.
Serbia's Novak Djokovic returns the ball in his match against South Africa's Kevin Anderson on day eight of the 2015 Wimbledon championships, London on July 07, 2015.Djokovic won the match 6-7, 6-7, 6-1,6-4, 7-5. Photo by Hugo Philpott/UPI.
Swiss Roger Federer returns the ball in his match against Spain's Roberto Bautista Agut on day Seven of the 2015 Wimbledon championships, London on July 06, 2015.Federer won the match 6-2, 6-2, 6-3. Photo by Hugo Philpott/UPI.