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.
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