Wigan, inspired by another strong Jackson Hastings performance, will head into next week's play-offs full of confidence thanks to a well-deserved 12-8 victory over Super League leaders Catalans Dragons.
The Warriors were the better team in a ferocious first 40 minutes and they led by six points at the break thanks to a try from captain Willie Isa following a sublime kick from former NRL star Hastings.
It took until the 52nd minute until the Dragons managed to breach Wigan's line with Tom Davies scoring in the corner.
It looked like the Dragons would go on to score more points, but it was Wigan who extended their lead with a fine try out of nothing for youngster James McDonnell, his first for the club.
A scrappy try from Matthieu Laguerre set up a tense finish, but the Warriors hung on to become only the fourth side to beat Steve McNamara's men in the league.
Catalans had chances but retiring ex-NRL star James Maloney had a rare night off with the boot. Wigan's line defence was also on point as they prevented Gil Dudson, Maloney and Davies crossing over.
Wigan coach Adrian Lam was proud of his side's effort, saying there was more to come.
"The kicking game was great tonight. I thought our defence was awesome again. It's been the cornerstone of us for the last four weeks."
McNamara felt his side needed the Wigan match to get them ready for the play-offs.
"I thought we had enough opportunities but Wigan defended great," said McNamara.
"Two tries each. We missed the goal kicks, which make a big difference. We have been on the other side of that plenty of times this season where Jimmy (Maloney) has kicked goals to help us win matches.
"I am slightly disappointed but it was certainly the kind of game we needed."
Hull's Australian coach Brett Hodgson, meanwhile, wasn't happy after his side was thumped 44-12 by Wakefield.
The Airlie Birds fell to a 10th loss in their past 11 matches to end their Super League season in dire fashion, conceding eight tries at the Mobile Rocket Stadium to be behind 34-0 at halftime.
Hodgson described the display as "hugely disappointing".
"We weren't willing to work hard enough and we got punished. I'm not going to separate myself from the playing group, I won't do that.
"We need to decide as a group how much we're willing to work for it next year. We didn't want to get physical."
Hodgson said he understands the growing frustrations of the club's fans.
"I sympathise with our supporters," he said. "This result highlights we need to make sure we're changing a few things in the organisation.
"We weren't at the races today and it's hugely disappointing. Too many players today weren't willing to do what was needed."
At the AJ Bell Stadium, the league's top tryscorer Ken Sio added two more to his tally as Salford produced a stunning second-half comeback to sink St Helens 26-14.
The Australian winger scored a try in each half to give him 19 for the season though his second was served up on a platter for him by his teammate Chris Atkin, who passed to him when already over the tryline.
Australian Associated Press