Head coach Nathan Brown has a selection headache on his hands as the league leaders look to continue their 100% start.
The away side are boosted by the return of experienced Australian duo Justin Poore and Mick Weyman, who have been missing through suspension.
Squad: Lomax, Makinson, Turner, Jones, Swift, Hohaia, Walsh, Masoe, Roby, McCarthy-Scarsbrook, Soliola, Wilkin, Manu, Laffranchi, Amor, Wellens, Walmsley, Percival, Wheeler.
Last match: Won 38-nil away at Salford
Squad: Salter, Cockayne, A. Walker, Eden, Poore, Cox, Larroyer, Burns, Carlile, Lovegrove, Hall, Green, Costigan, Langley, Keating, Welham, Weyman, Horne, J. Hodgson.
Last match: Lost 30-10 at home to Castleford
Super League summary
St Helens won 8 (includes win in 2013 play-offs)
Hull KR won 7
St Helens highest score: 68-12 (H, 2010) (also widest margin)
Hull KR highest winning score: 28-24 (H, 2010) (widest margin: 26-10, H, 2009)