The 34-year-old needs Olympic gold...
Tennis number 1, Novak Djokovic, has said he will play at the Tokyo Olympics, giving him the opportunity to achieve the first calendar Golden Slam by a male player.
The 34-year-old needs Olympic gold and then the US Open to become the first man to capture the Golden Grand Slam.
The calendar Golden Slam has only ever been achieved once in the women's game when Steffi Graf swept the board of all four majors and Olympic gold at Seoul in 1988.
