SUPER League clubs will continue to keep a close eye on events in Australia, where one of yesterday's matches was postponed due to an indirect coronavirus case.

The incident highlights the perils of resuming professional sport after Covid-19, with the postponement coming two weeks into the re-started NRL season.

After resuming from a two-month suspension for its third round of fixtures on May 28, crowds were allowed back into stadiums at the weekend despite opposition from medical authorities.

But the move suffered a setback when Sunday's match between Sydney Roosters and cross-town rivals Canterbury Bulldogs was called off a few hours before kick-off.

The decision was taken because one of Bulldogs' forward Aiden Tolman's children attends a school where a staff member has tested positive for Covid-19. The school has closed until June 25, with students told to self-isolate.

The NRL said in a statement that Tolman and all players and staff in Canterbury's 50-person bubble would be tested, with the match rescheduled for Monday evening (local time) instead pending test results.

Canterbury's 50 have since all cleared tests, including Tolman, but he will have to enter a 14-day period of quarantine.