Serbia's Novak Djokovic returns the ball to Germany's Alexander Zverev during their Tokyo 2020 Olympic Games men's singles semifinal tennis match at the Ariake Tennis Park in Tokyo on July 30, 2021. (VINCENZO PINTO / AFP)

TOKYO - Novak Djokovic was beaten 1-6 6-3 6-1 by Germany's Alexander Zverev in the semi-finals of the men's singles at the Tokyo Games, dashing the Serbian's dream of winning his first singles gold medal and completing a Golden Slam.

Djokovic had been aiming to become the first man to win all four majors and Olympic gold in the same calendar year, matching the feat Steffi Graf achieved in 1988.