Following two inconclusive test results each for Hull KR and Salford Red Devils, their game on Tuesday was delayed by an hour.
Wigan Warriors and St Helens were Super League winners at Headingley, while Catalans Dragons were also victorious on Friday.
Wigan Warriors and Warrington Wolves continued to set the standard in Super League with Friday victories.
Warrington Wolves' winning run continued in dramatic fashion at Castleford Tigers, while Hull FC edged out Wakefield Trinity.
A dominant win over Huddersfield Giants sent St Helens to the top of Super League, while Warrington Wolves cruised despite missing key men.
Hull FC had 12 cases of coronavirus at the club in mid-August, but they returned to action with a handsome win on Sunday.
Jackson Hastings, James Gavet and Riley Dean were given 14-day bans and fined by the Rugby Football League.
Catalans Dragons crushed Wakefield Trinity but Warrington Wolves were made to work hard against Huddersfield Giants.
Castleford Tigers forged a 14-point lead but an Israel Folau-inspired Catalans Dragons ran out 40-14 winners.
Steve Price has firmly denied talk of marquee signing Gareth Widdop leaving Warrington Wolves to return to the NRL.