Serbia's Novak Djokovic serves during the practice session ahead of the Tokyo Olympics. Fresh from success on the lawns of Wimbledon, Novak Djokovic continues his quest to become the first man to win the calendar Golden Slam – all four Grand Slam tournaments and Olympic gold in the same year. Only Steffi Graf has managed the feat, back in 1988, but if Djokovic prevails in Tokyo he will need just the US Open in August to clinch it.
Also Watch: