Novak Djokovic able to participate in 2023 US Open as government lifts COVID-19 vaccine mandate | CBS Sports Headlines Novak Djokovic able to participate in 2023 US Open as government lifts COVID-19 vaccine mandate Djokovic, a three-time US Open champion, missed last year’s tournament because of his vaccination status ESN … Continue reading Novak Djokovic able to participate in 2023 US Open as government lifts COVID-19 vaccine mandate