Betfred Super League
Castleford Tigers (0) 0
Hull KR (20) 48
Tries: Broadbent 2, Booth 2, Davies 2, Mourgue, Whitbread, Hiku Goals: Mourgue 6
Imperious Super League leaders Hull KR thrashed Castleford Tigers to make this their best ever start to a season.
Victory in West Yorkshire means the Robins, Challenge Cup winners earlier this month, have now won 14 of their opening 15 league games.
Jack Broadbent, Noah Booth, Tom Davies and Arthur Mourgue scored in a dominant first 40 minutes.
Jai Whitbread and Peter Hiku added further scores and Booth, Davies and Broadbent all went over for a second time as the visitors kept their foot down.
Willie Peters' men are now four points clear of second-placed Wigan, who travel to Wakefield on Friday.
Danny McGuire's side, who had claimed an impressive win at Hull FC last week, have lost 11 of their first 15 league games.
The first meeting between these two sides on the opening weekend of the Super League season had seen the Robins need a golden point matchwinner from Mikey Lewis.
It was evident inside 10 minutes on Thursday night that this would not be a repeat as Broadbent and Booth both crossed on the Robins' left edge.
Davies, who had earlier seen a score chalked off by the video referee, then went over from Mourgue's pass on the right and the Frenchman got one for himself before the break.
The Tigers nearly got themselves on the scoreboard when Louis Senior showed great determination to sprint 70 metres before handing off to Zac Cini five metres out but the Australian fumbled the ball under pressure from the impressive Broadbent as he looked to make the grounding.
That stirred KR back into life and Whitbread picked up a loose ball close in to add to the lead before Booth claimed his second try after the home defence failed to deal with a high kick.
Hiku and Davies went in on the right and Broadbent made sure he had the final say when he high-pointed a Lewis kick in the final minute to dot down his side's ninth try.
This is the fifth time that the Robins have prevented their opponents from scoring in the league this season.
They welcome Wakefield to Craven Park next Friday, while Cas host second-placed Wigan a week on Saturday.
Castleford Tigers: Cini, Simm, L Senior, Wood, I. Senior, Asi, Milnes, Amone, Horne, Singleton, Lawler, Mellor, Atkin.
Interchanges: Westerman, Griffin, Hall, Hill.
Hull KR: Mourgue, Davies, Hiku, Broadbent, Booth, Lewis, May, Sue, Litten, Hadley, Whitbread, Batchelor, Minchella.
Interchanges: Luckley, Tanginoa, Brown, Leyland.
Referee: Liam Moore