Castleford prop Grant Millington signs a new three-year deal to keep him at the club until the end of 2020.
League Leaders' Shield winners Castleford Tigers sign Newcastle Knights centre Joe Wardle on a three-year deal.
Castleford coach Daryl Powell expects a "superb" few years from his League Leaders' Shield-winning Super League side.
Jake Webster scores four tries as Castleford Tigers beat Wakefield Trinity to clinch the Super League League Leaders' Shield.
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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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