If Walker is 100% fit I'd go with
Walker
T.Briscoe
Newman
Hurrell
Handley
Sutcliffe
Myler
Seamanufagai
Dwyer
Cuthbertson
Smith
Watkins
Merrin
Subs
Lolohea
Oldezki
Donaldson
Albert
Singleton was poor again on Friday stats wise and has been all season and doesn't deserve a spot, Ferres I thought was good defensively Against Wakefield but in attack he come up with a few errors and wasn't effective, but no doubt both will play against Wigan. Lolohea was poor against Wakefield too many errors returning ball and was quite poor in positioning on last tackle plays Handley and Briscoe had to clean up a lot of last tackle kicks put though by Wakefield, but he produced a moment of magic when we needed it so coming of the bench to do a stint in halves or hooker could benefit him and the team.