Novak Djokovic returned home Monday after being thwarted from defending his Australian Open title only to face a new predicament: He could be barred from the French Open this year, too, if he's still not vaccinated against COVID-19.

There was no social distancing and few among the thousands wore face masks — and Novak Djokovic approved. The fans filled the makeshift stands on Friday at Djokovic's Belgrade tennis club on the banks of the Danube River for the opening day of his charity tennis tour

Novak Djokovic has reiterated he is against taking an anti-coronavirus vaccination if it becomes mandatory to travel once the pandemic subsides, but says he's open to changing his mind.