But Morrison is looking for major improvements on last week’s display, despite picking up a 22-16 win at Doncaster.
Morrison said: “I was happy that we got a win out of a sloppy situation, because sometimes you lose the game in situations like that, but we were a little bit off.
“For example, we only completed at about 50 per cent, so we know we’re going to have to up our game – especially against these boys. They’re top class.”
Rovers coach Daryl Powell said: “We’ve got a lot of quality about us, and I’m really excited about the season in front of us.”
He added: “Dewsbury have started really well and they’ll be a tough proposition, but we’ll look after ourselves and go there to put our best foot forward.
“We’ve a few things we need to right from last year, and I’m confident we’ll do that, but we know there are going to be some tough challenges around the corner.”