Leeds Rhinos moved four points clear of 12th-place London Broncos by thrashing Catalans Dragons on Friday, despite having a man sent off.
The clinical Ash Handley has agreed a new deal to remain at Headingley until at least 2023.
Huddersfield Giants were torn apart by struggling Leeds Rhinos at their own ground in Super League on Friday.
St Helens have only lost three games all year in Super League, but two of those defeats have come at London Broncos.
Super League table-toppers St Helens moved 10 points clear after a 32-10 win over Wigan Warriors, while Salford surprised Warrington.
Leeds Rhinos, St Helens and Wigan Warriors all enjoyed momentous victories in Super League on Friday.
Castleford Tigers head coach Daryl Powell says he has unfinished business at the Super League club after extending his deal until 2022.
Leeds Rhinos won their first game without Kallum Watkins, defeating Catalans Dragons 31-12 at Headingley on Sunday.
Rhyse Martin has arrived from Canterbury Bulldogs as Leeds Rhinos' third signing of the week.
Leeds Rhinos have brought in Robert Lui and Shaun Lunt, with Tui Lolohea and Matt Parcell leaving Headingley.