Novak Djokovic repeated his hardline refusal to get a Covid-19 vaccination Saturday as he resigned himself to sitting out the season's last Grand Slam at the US Open. Djokovic was deported from Melbourne in January over his single-minded but controversial stance, forcing him to abandon an assault on a 10th Australian Open title. With no sign of the US authorities relaxing their rule requiring all visitors to be vaccinated, the 35-year-old Djokovic admitted Saturday that Wimbledon, which starts Monday, will be his last Slam of 2022. When asked if he had completely closed his mind to getting vaccinated, he was unequivocal.