Australian Open Hit by Third Virus-Infected Plane, 72 Players Now in Isolation

A general view of Rod Laver Arena at sunset in the third round match between Alex De Minaur of Australia and Rafael Nadal of Spain during day five of the 2019 Australian Open at Melbourne Park on January 18, 2019 in Melbourne, Australia. Scott Barbour/Getty Images

The Australian Open has been hit by another setback as a fifth person tested positive for coronavirus, forcing 25 more players into hotel quarantine.

A total of 72 players are now isolating in their hotel rooms ahead of the tournament.