Castleford go into this game looking to bounce back from defeat to Huddersfield last week, and keep their faint hopes of the top four alive.
Loose forward Nathan Massey is missing as he needs surgery on his wrists, and will be out for the rest of the season.
If Saints manage to win, then they will seal a spot in the top four, jumping ahead of Huddersfield in the process.
Castleford (19-man squad): Boyle, Channing, Dorn, Finn, Gale, Gibson, Holmes, Lynch, Maher, McMeeken, McShane, Millington, Milner, Moors, Roberts, Shenton, Solomona, Springer, Wheeldon.
St Helens (19-man squad): Amor, Burns, Flanagan, Greenwood, Jones, McCarthy-Scarsbrook, Makinson, Masoe, Percival, Richards, Quinlan, Roby, Savelio, Swift, Thompson, Turner, Walmsley, Walsh, Wilkin.
Grant Millington needs one appearance to reach 100 for Castleford. Millington made his Tigers debut in a 36-14 home defeat to Leeds on 2 March, 2012.
Tommy Makinson is 12 points away from 500 (488 for St Helens, 2011-2015)
Jordan Turner needs one try to reach a career century of touchdowns. His total of 99 has been scored as follows: 24 for Salford (2006-2009), 34 for Hull FC (2010-2012), 39 for St Helens (2013-2015) and 2 for England Knights (2012).
Super League Summary:
Castleford won five
St Helens won 34 (includes wins in 1999 and 2014 play-offs)
Castleford highest score: 36-22 (H, 2002) (Widest margin: 35-16, H, 1997)
St Helens highest score: 72-4 (A, 2006) (also widest margin)
Last 10 Meetings:
Castleford 25, St Helens 24 (SLR19, 18/6/15)
St Helens 21, Castleford 14 (SLR3, 27/2/15)
St Helens 41, Castleford 0 (SLQPO, 19/9/14)
St Helens 38, Castleford 16 (SLR17, 22/6/14)
Castleford 28, St Helens 30 (SLR8, 11/4/14)
Castleford 24, St Helens 40 (SLR21, 7/7/13)
St Helens 48, Castleford 18 (SLR10, 1/4/13)
St Helens 44, Castleford 12 (SLR25, 17/8/12)
Castleford 12, St Helens 18 (SLR11, 9/4/12)
Castleford 26, St Helens 46 (SLR23, 31/7/11)