Rovers, who led 46-0 at half-time in a one-sided encounter, saw 10 different players cross for tries as they made it three wins from three at the start of the new campaign.
Liam Finn collected one of those tries while he also added eight goals for a personal haul of 20 points.
Second-placed Halifax are the only other side with nine points from their opening three matches as they eased past Keighley Cougars 30-20.
Batley are third after downing York City Knights 42-4 to record their second victory of the campaign, George Flanagan and Miles Greenwood both scoring a brace of tries for the Bulldogs while Tom Hemingway also crossed as well as adding seven goals.
Alongside Batley on seven points are Sheffield, Doncaster and Dewsbury, who all won today.
Defending champions Sheffield staged a second-half masterclass as they swept aside second-bottom Swinton 52-20 having trailed 8-6 at the interval. Dominic Brambani led the charge for the visiting Eagles with two tries and eight goals.
Dewsbury scored all their points in the first half as they beat Hunslet 14-4 away from home, while Doncaster saw off Workington 26-4.
- Sports & Recreation
- Keighley Cougars
- York City Knights