Catalans Dragons match against Wigan Warriors has been postponed after three Dragons players and one member of staff test positive for coronavirus.
Instead, the Warriors will now play Castleford Tigers, who were due to have a bye week. All clubs that are on byes are instructed to be on standby.
That will take place at 4.15pm on Saturday.
In addition, two Wakefield Trinity players have been picked up as having to self-isolate.
However, their game with Warrington Wolves will still taking place on Sunday as scheduled at 6.30pm.
