Novak Djokovic will not be allowed to play in the US Open due to his vaccination status.WATCH: Prince George's adorably shy moment with Novak Djokovic caught on camera The US Open confirmed on Wednesday their entry requirements for all players, with tournament organizers sharing that "all eligible players are automatically entered into the men's and women's singles main-draw field based on ranking 42 days prior to the first Monday of the event". WATCH: Prince George's must-watch moment with Novak DjokovicThe tournament begins on 29 August. However, although there is no vaccine mandate specifically from the organization, the US government requires all guests flying into the country to be vaccinated, and organizers confirmed that they would "respect the U.S. government's position regarding travel into the country for unvaccinated non-U.S.