PBS NewsHour | Clip | Djokovic battles with Australia after violating COVID rules
The best men's tennis player in the world is caught up in a quarantine quandary in Australia, as the first of this year's Grand Slam tennis tournaments is poised to begin. Novak Djokovic is not vaccinated: he's a skeptic. Australian officials are not skeptics, and demand proof of vaccination to enter the continent. Nick Schifrin reports.