Wigan: (0) 10
Tries: Barrett, Richards
Hull KR: (10) 12
Tries: Dyer, Hardman
Goals: Cooke 2
Hull KR held off a determined Wigan fightback to win for the second time at the JJB Stadium this season.
Luke Dyer and Ian Hardman both went over in the final 10 minutes of the first half to give the visitors a 10-0 lead at the break.
Trent Barrett cut the gap with a try, converted by Pat Richards, before Paul Cooke kicked a penalty for Hull KR.
Richards went over again 10 minutes from time but his conversion hit the post, which ultimately proved crucial.
Wigan assistant coach Phil Veivers
"There was no consistency in the first half, and we made a mountain for ourselves in the second half - but we nearly clawed it back.
"The effort was tremendous in the second half, and we got back to how we
wanted to play. Maybe with a bit of luck, and a few passes sticking here and there, we might have scored a couple more tries.
"You look for consistency, and that's what we're striving for at the moment."
Hull KR coach Justin Morgan
"I thought we were the better side, We deserved to win.
"I have been singing Trent Barrett's praises all season. I'm a huge admirer of him as a rugby league player, and I think he's been fantastic for Wigan this year.
"I wouldn't mind having a few quid in him being Man Of Steel at the end of the year, and to beat a team with him in it - and a team that has won twice at Headingley - is true testament to our players."
Wigan: Ashton, Calderwood, Bailey, Vaealiki, Richards, Barrett, Leuluai, Fielden, Millard, Paleaaesina, Hock, Hansen, O'Loughlin.
Replacements: Higham, O'Carroll, Tomkins, Goulding.
Hull K R: Cockayne, Hardman, Dyer, Goddard, Ford, Cooke, Webster, Vella, Fisher, Gannon, O'Neill, Chester, Gene.
Replacements: Lennon, J. Netherton, Ward, Tangata-Toa.
Referee: R Laughton (Barnsley).