Stats over the last 6 encounters
St Helens will give a debut to Ben Barba at full back, with Jonny Lomax switching to stand-off in place of Theo Fages, who is poised for a place on the bench. Prop Luke Douglas is back after a three-game injury absence.
Wigan Warriors coach Shaun Wane is set to field his beaten Wembley team, although he has called up Nick Gregson and Jack Wells in place of Tom Davies and Joel Tomkins, who were left out of his Challenge Cup final 19-man squad.
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