Centurions are likely to be unchanged from the team that recorded an impressive victory at Widnes last week.
Assistant coach Paul Rowley said: “We were good, our line speed was back and it was a very pleasing performance.”
However, Rowley insists his side, who are trying to secure second place in the Co-operative Championship, cannot underestimate Dewsbury.
He said: “They were unlucky to lose at Widnes recently because they were the better team for large periods.
“They’re a much improved side from earlier in the season, and there’s no way we’ll be taking them lightly.”
He added: “They’re keen to get points and victories for different reasons to us, but both clubs have got a lot to play for and the intensity levels should be there.”
Rams coach Warren Jowitt has told his side not to relax despite last week’s win over Batley.
Jowitt said: “I don’t think we’re safe, but we’ve climbed another hurdle and we’re another rung on the ladder closer to staying in the Championship. You can’t count your chickens because anything can happen.”
He added: “Leigh are a very good side, they’re competing in the top six so it’s going to be a tough battle, but if we play like we did last week and stick to our guns then we might get another result.”
Dewsbury’s squad emerged unscathed from the clash with Batley.