Having pushed Leeds all the way at Headingley, only losing because of their own inexperience in such high pressure situations, they promptly went and turned St Helens over at New Craven Park on Sunday afternoon.
By any standards, that is a stellar start to the season and one which singles out the Humberside outfit as genuine play off contenders.
Rovers started strongly last year too, of course, the newly promoted side scoring early wins against Leeds, Wigan and Wakefield.
Inevitably, they faded in mid season and ended up in a lengthy relegation scrap with Salford, a battle they eventually won pretty comfortably.
This year, no one should be expecting them to lower their standards as the season goes on. Barring a mammoth injury crisis, Rovers are here to stay.
Their success also underlines the rising star of their coach, Justin Morgan.
The Australian didn't endear himself to anyone in Halifax with a string of moans and groans as Rovers romped to promotion in 2006.
But what was crystal clear then is even clearer now: Morgan is a world class coach who, ultimately, will be regarded as one of the very best.
With the top job at St Helens shortly to be vacated by his brother-in-law, Daniel Anderson, and several NRL coaches coming off contract in 2009, Rovers are going to have to work awfully hard over the next few months and years to keep their man.

THE Rugby Football League's new disciplinary system seems to be winning plenty of admirers.
Replacing the old, highly subjective system, with a properly structured, graded set up, similar to the one used in the NRL for a number of years, was long overdue.
Out of the seven players referred by the video review panel on Monday morning, only one, Bradford's Glenn Morrison, was found not guilty.
It is early days to be talking about a clampdown on foul play, but if a similar number of offenders end up before the beak next week, it won't be.
The key, as ever, is consistency.
If the RFL can deliver that over the course of a season, no one will be complaining.

I DON'T take offence easily, which is always handy in my line of work.
But I thought Halifax coach Matt Calland went a bit far in his post match press conference at Keighley last weekend.
True, it had been a frustrating afternoon for the former Bradford centre, who had just watched his side turn a 40-12 half time lead into a scarcely credible 64-40 victory.
"Many more games like that and I'll be bald," opined Calland to the assembled scribes, at least two of whom - me included - lacked even a solitary hair on their heads.
And what, may I ask, would be so bad about that?