Shaun Briscoe and Ben Cockayne both saw tries ruled out by referee Ashley Klein in Sunday's quarter final.
Ben Cockayne gave the visitors hope and quick tries from Cockayne again and Kirk Netherton led to a frantic finale.
In many other cases the wreckers are too effectively globalised for any one state to take them on, adds Mr Cockayne.
Rovers had Jake Webster sent off for a high arm with 10 minutes left before Ben Cockayne got a consolation try.
And Rovers went ahead shortly before the break when Scott Murrell kicked through for Cockayne to ease by Luke Burgess and touch down.
The Rhinos trailed 14-6 early in the second half after Kris Welham and Ben Cockayne crossed for Rovers and Michael Dobson kicked three goals.
And it was the boot of Dobson that added the next points as he split the posts after Cockayne was caught late by Willie Manu.
Winger Ben Cockayne was sin-binned for a late tackle nine minutes before the break and Ben Fisher joined him two minutes later for a series of high tackles.
The half was marred by a big fight involving both sets of players after an off-the-ball incident which saw Lupton and Rovers' Ben Cockayne warned by referee Robert Hicks.
They took the lead when Blake Green's delayed pass put Webster over, with Sheriff marking his debut with a try after Galea and Ben Cockayne combined well on the left.
Walker's injury, after he went down awkwardly in a tackle with Senior, was a cruel blow with Shaun Briscoe, Ben Galea, Scott Murrell, Ben Cockayne and Jake Webster already absent for the Robins.
Rovers got back into the match when Cockayne profited from a Paul Cooke up-and-under to crash over and as conditions deteriorated the match remained on a knife-edge before Sheriffe ran KR out of town.
Since then, Jamie's parents -- Bill and Jeanie Cockayne -- have grown uneasy with the island's law enforcement officials who, they claim, have been slow to act and slow to give them information about the case.
Hall crossed the line again but fumbled the ball in the grounding before Cockayne brilliantly latched onto a grubber from Galea to ensure a fourth game without defeat for Hull KR - and sixth place in Super League.
Hull were not without their chances, and tackles from Shaun Briscoe denied Lee Radford and Sean Long on the line, while Fox and Ben Cockayne did brilliantly to keep Jordan Turner out on the stroke of the hooter.
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