Kick-off: Friday 7.45pm
Venue: Totally Wicked Stadium
Team news: England hooker James Roby returns for St Helens alongside Matty Costello - who won the Championship Young Player of the Year on Tuesday night following his sterling work with Sheffield Eagles - and Jake Spedding.
With one eye on next week’s semi-final against Warrington, England duo Jonny Lomax and Luke Thompson plus veteran forward Jon Wilkin are omitted from the 19-man squad.
Similarly, Castleford Tigers boss Daryl Powell has left out prolific winger Greg Eden, England second-row Mike McMeeken and prop Junior Moors while captain Michael Shenton is nursing a knee injury suffered against Wakefield Trinity last Friday.
Coming into the 19-man squad, then, are Joe Wardle, who hopes to prove his fitness in time for next Thursday’s semi-final at Wigan Warriors, Quentin Laulu-Togaga’e, Jamie Ellis and 17-year-old Lewis Peachey, a second-row who hails from Dearne Valley Bulldogs in Barnsley and could make his debut.
Last meeting: Castleford 18 St Helens 40; May 24
Last six results: Castleford LWWWWW St Helens LWLWWW
Referee: Scott Mikalauskas (Leigh)
Match odds: Castleford receive four point start