Very tough to predict. We have always beaten Saints in these good Friday games since Maguire came in, and Wane has always beaten them when there have been no distractions (the losses coming the week before the CC semi last season and the week before the play offs the season before). Saints are a lot better this season though and I think they'll come out with a point to prove, beating us on Friday would really signal that they are ready to end their trophy-drought.
Having said that, I think we have a point to prove as well. All you hear when trophies are discussed is Leeds and Saints, despite us holding both trophies very few people seem to be backing us to keep either. The team seems to be at its strongest as an underdog (as we were in both play offs and the final last year) so I'm going to go for a narrow Wigan win.
Saints 18 Wigan 20 (losing 18-4 at HT)
Team wise I think it's a risk throwing Manfredi into a good Friday derby after just one game v Wakey (in which he had the ball ripped, allowing them to go the full length and score) and Sarginson doesn't really look comfortable on the wing for my money. As such I'd go with Thornley out wide, who has plenty SL experience on the wing and is in good form.
FB 1 Bowen
RW 4 Thornley
RC 3 Goulding
LC 23 Sarginson
LW 32 Burgess
SO 6 Green
SH 7 Smith
P 8 Taylor
H 9 McIlorum
P 10 Flower
SR 25 Bateman
SR 12 Farrell
LF 13 O'Loughlin
S 17 Crosby
S 24 Clubb
S 25 Pettybourne
S 27 Williams