Josh Aloiai has reportedly become the first NRL player to contract COVID-19.
The Manly forward had been preparing to fight Paul Gallen in Newcastle next month.
But a News Corp report says the bout has now been cancelled because Aloiai tested positive to the virus.
Aloiai is the first current NRL player known to have caught the virus since the start of the pandemic last year.
He was not yet due back at Manly training, and it's believed the entire Sea Eagles squad has at least had their first dose of the vaccine against the virus.
Less than 15 NRL players are still to have their first shot.
And the NRL is confident that number will be no more than five players, with clubs still weighing up how to best deal with those who refuse the vaccine.
It comes as the AFL had its first case in more than a year earlier this month after Hawthorn's Finn Maginness tested positive.
A handful of AFLW players have also contracted the virus.
The Sheffield Shield match between NSW and Victoria at the SCG was also postponed for day when allrounder Will Sutherland tested positive.