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Australia's Nick Kyrgios returns to Canada's Milos Raonic during their men's singles quarter-final match on day nine of the 2014 Wimbledon Championships at The All England Tennis Club in Wimbledon, southwest London, on July 2, 2014. AFP PHOTO / CARL COURT - RESTRICTED TO EDITORIAL USE (Photo credit should read CARL COURT/AFP/Getty Images)

Australia's Nick Kyrgios returns to Canada's Milos Raonic during their men's singles quarter-final match on day nine of the 2014 Wimbledon Championships at The All England Tennis Club in Wimbledon, southwest London, on July 2, 2014. AFP PHOTO / CARL COURT  - RESTRICTED TO EDITORIAL USE        (Photo credit should read CARL COURT/AFP/Getty Images)