The shadow of Novak Djokovic of Serbia as he serves during his Gentlemen's Singles quarter-final match against Marin Cilic of Croatia. Photo by Clive Brunskill/Getty Images
Roger Federer of Switzerland slips over during his Gentlemen's Singles quarter-final match against Stan Wawrinka of Switzerland. Photo by Jan Kruger/Getty Images
Milos Raonic of Canada during his Gentlemen's Singles quarter-final match against Nick Kyrgios of Australia. Photo by Clive Brunskill/Getty Images
Nick Kyrgios of Australia sits dejected during his Gentlemen's Singles quarter-final match against Milos Raonic of Canada. Photo by Clive Brunskill/Getty Images
Novak Djokovic of Serbia during his Gentlemen's Singles quarter-final match against Marin Cilic of Croatia. Photo by Al Bello/Getty Images