Brett Kearney was a late withdrawal from the Bulls' trip to St Helens tonight after picking up a hamstring injury.
The Australian, who scored twice during Monday's home win over Castleford, was replaced by Michael Platt at full back.
That meant Elliott Whitehead came back into the side in the centres and Jamie Langley returned to line up
at prop after a two-match injury absence.
Bulls: Platt, Ainscough, Whitehead, Lulia, Pryce, Jeffries, Gale, Langley, L'Estrange, Hargreaves, Olbison, Bateman, Elima Interchange: Manuokafoa, Sibbit, Burgess, Addy