Novak Djokovic not ready to commit to Australian Open

World No. 1 Novak Djokovic isn't ready to say whether he will defend his Australian Open title next month in Melbourne.

The issue: Tournament participants are required to be vaccinated against COVID-19, and Djokovic has refused to say whether he has been. He previously has stated his opposition to vaccination mandates for players.

Instead, he evaded the questions when asked Friday at the conclusion of his run in the Dav