Stats over the last 6 encounters
Warrington Wolves plug the gaps caused by the absence of England internationals Stefan Ratchford, Kevin Brown and Chris Hill with the addition of Harvey Livett, Ben Westwood and Dom Crosby while coach Tony Smith also hopes Daryl Clark and George King will be fit to return from injury. Morgan Smith features for the first time this season but Joe Westerman is out with a neck injury.
St Helens are without England duo Alex Walmsley and Mark Percival but hooker James Roby returns from a five-match injury absence and there are places in the 19-man squad for Jake Spedding and Greg Richards.
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