Djokovic beats Zverev in 3 hours 33 minutes in US Open semi, reaches 31st Slam final

World number one men's tennis player Novak Djokovic defeated world number four Alexander Zverev in the US Open 2021 semi-final to reach his 31st Grand Slam final. The 34-year-old Serbian won the match 4-6, 6-2, 6-4, 4-6, 6-2 in three hours and 33 minutes. Djokovic is now one victory away from a 21st major and a calendar-year Grand Slam.