Matt Dufty’s try in a seesaw encounter at Hull KR gave Warrington a third straight victory.
The lead changed hands four times, with both teams suffering from goalkicking problems, to ensure a tight contest.
Australian full-back Dufty was a key man throughout for Wolves, who have bounced back from their opening-day defeat at Catalans.
Rovers were left to rue several big errors as they suffered a second consecutive defeat, after last week’s shock loss at Salford.
Wire were quickest out of the traps, with two tries in the opening 14 minutes.
Dufty was the architect of the first, feigning to go left and then turning back inside to send England captain George Williams, making a surprise early return after injury, flying over the line.
The hostile Craven Park crowd were silenced again minutes later as KR full back Peta Hiku contested a Leon Hayes chip with Matty Ashton and the Warrington man grabbed the ball to touch down.
Tyrone May inspired a Robins revival with a prodigious leap above Dufty to gather Mikey Lewis’ spiralling high kick and go over, and then veteran wing Ryan Hall edged to within five tries of Danny Maguire’s record Super League haul from Oliver Gildart’s brilliant one-handed offload.
Rovers seemed to be back on track, but they were suckered twice late in the half after James Batchelor had dropped the ball over the line.
Tom Opacic’s error at the play-the-ball led to a Toby King try and Warrington went back in front when Dufty bounced off a poor Jez Litten tackle attempt to kick through for Connor Wrench, who dribbled the ball over the line.
Warrington could have been comfortable, but with Josh Thewlis and Hayes missing three of four conversions, they were still within reach.
Rovers stepped on the power in the second half after Niall Evalds switched to full-back and Hiku went into the centres, and the excellent Lewis’s pass freed Hall, who passed back inside for Gildart to score.
May’s superb pass cut out two defenders to send Opacic over in the corner, but with Litten off the field James Batchelor missed both conversions to leave the game on a knife-edge.
Warrington won it after soaking up pressure and launching an attack which resulted in a scrum 10 metres out. They moved the ball quickly left and Dufty raced through a gap.
Hull KR: Hiku, Evalds, Opacic, Gildart, Hall, May, Lewis, Hadley, Litten, Whitbread, Tanginoa, Batchelor, Minchella
Interchanges: Sue, G. King, Parcell, Luckley.
Warrington: Dufty, Thewlis, T. King, Wrench, Ashton, Williams, Hayes, Harrison, Walker, Vaughan, Holroyd, Fitzgibbon, Currie.
Interchanges: Philbin, Crowther, Musgrove, Powell.
Referee: Aaron Moore.