LONDON, ENGLAND - JULY 01: Sam Querrey of USA in action against Novak Djokovic of Serbia at Wimbledon on July 1, 2016 in London, England. (Photo by Visionhaus/Corbis via Getty Images)
LONDON, ENGLAND - JULY 01: Sam Querrey of USA in action against Novak Djokovic of Serbia at Wimbledon on July 1, 2016 in London, England. (Photo by Visionhaus/Corbis via Getty Images)