League Leaders' Shield winners Castleford Tigers sign Newcastle Knights centre Joe Wardle on a three-year deal.
Rhys Hanbury and Chris Bridge both score hat-tricks as Widnes thrash Featherstone to boost hopes of Super League survival.
Hull KR survive a London Broncos fightback to boost hopes of making an immediate Super League return.
Warrington Wolves overcome Championship side Halifax to maintain their perfect record in The Qualifiers.
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Castleford head coach Daryl Powell says he is "delighted" after the Tigers secured their top spot in Super League and ended their 91-year wait for a top-flight title.
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