tony Miller hopes to be boosted by the return of Paul Cooke and Dean Colton for Sunday’s game with South Wales Scorpions.
Cooke missed last week’s Challenge Cup fixture with an Achilles problem, while Colton was ruled out with a groin strain.
Nathan Mossop (shoulder) faces a late fitness test before Scorpions coach Dave Clark can settle his team to travel to Doncaster.
But Clark’s squad will definitely include Alan Pope, who missed last week’s 24-22 win at Wath Brow after his wife gave birth.
Clark said: “It’s going to be a huge challenge for us at Doncaster.
“We need a good performance, and if we can get to a completion rate like we did against Wath Brow, when we were up to 80 per cent, then we’ll compete well.
“Doncaster are looking at promotion and finishing in the top four.
“If you look at the personnel they’ve got, they’ve got a wealth of experience.
“Paul Cooke is an outstanding player, while Mike Emmett is very strong and runs well from dummy half.
“There are some big tests for us right across the field. We’ll have to be at our best.”