Wigan's first visit to Langtree Park and the Warriors came away with a superb 28-10 win against arch rivals St Helens.
Shaun Wane with an understrength squad produced a heroic 80 minutes of rugby to come away with the two Super League points.
Darrell Goulding and George Carmont crossed for first half tries and Sam Tomkins and Gareth Hock with less than ten minutes left and an even later Jeff Lima touchdown was enough to engineer another famous win.
Wigan had the last ever win at Saints old ground a couple of years ago and this at their new home will have been just as sweet, a magnificent effort.
Wigan were without the injured Sean O'Loughlin, Ben Flower, Liam Farrell and Lee Mossop with Epalahame Lauaki suspended, Richards and McIlorum passed fitness tests on Thursday to make the starting side. The Warriors starting with Lima and Prescott at props and on the bench Gil Dudson made his first team debut after his close season signing from the Crusaders, the rest of the Wigan replacements had a young feel with Spencer, Hughes and Logan Tomkins.
Saints were without the supended duo of Paul Wellens and Anthony Laffranchi.
It was a nervous start by both sides, Makinson knocking on from a Leuluai kick and soon after Finch unable to take a Tuson pass as Wigan looked to push for some early pressure. This was soon followed by a Carmont mistake from a Hock push forward.
On 9 minutes it was the home side who took the lead, the ball squeezed out in the tackle on Sam Tomkins and Hohaia was able to pass the ball to winger Francis Meli who was just able to stretch over in for a try in the left hand corner, Lomax missed the conversion, 4-0.
Wigan responded on 16 minutes with a move to the right, Leuluai to Sam and a gap opened up for Darrell Goulding to cross for the visitors first try of the afternoon, Charnley hit the conversion to make it 4-6.
On 22 Wigan came close to their second try but the video referee ruling out Richards effort out wide from a Finch pass.
Three minutes later and a Finch pass to Carmont and the centre powered over from close range for Wigan's second try which Charnley converted, 4-12.
On 33, Wigan lost Pat Richards, replaced by Prescott with Goulding going out to the left wing and Jack Hughes in the centre.
With half time approaching Wigan were denied a try as Hughes looked to have gone over but on his back and the video referee judged that Hughes had failed to ground the ball.
Saints looked to seize the advantage from the kick off with pressure on the Warriors defence but it took 12 minutes into the second period before the next score, Wigan were penalised three times in a row for off side and Soliola had the power to score from close to the line, Makinson hit the conversion, 10-12.
The home side continued to press now, Sam Tomkins was forced to ground the ball in his in goal area as Wilkin looked for a try.
But it was at the other end that Wigan with probably their first attack of the half we able to create a try, Perry penalised for a push on Hock and from the penalty a Hock superb off load found Sam Tomkins in support who jinked inside the final defender for a great try. Charnley added the goal and Wigan were 10-18 to the good with less than a quarter of the game left.
On 71 minutes Goulding broke free down the left and chipped ahead and seemed certain to score before Shenton stopped him off the ball with a shove, Shenton sent to the sin bin. From a quick play the ball Finch fed Hock for the try, Wigan's fourth and the win was sealed. Charnley missed the goal but Wigan held a 12 point lead.
A Jeff Lima try completed the scoring at the death from close range, Charnley goal 10-28.
A huge travelling army of Wigan fans behind the goal thoroughly enjoyed this Easter treat from the cherry and whites.
Team News -
St Helens - Tom Makinson, Ade Gardner, Michael Shenton, Josh Jones, Francis Meli, Lance Hohaia, Jonny Lomax, Josh Perry, James Roby, Shaun Magennis, Chris Flannery, Tony Puletua, Jon Wilkin
Replacements - Sia Soliola, Louie McCarthy-Scarsbrook, Mark Flanagan, Paul Clough
Wigan Warriors - Sam Tomkins, Josh Charnley, Darrell Goulding, George Carmont, Pat Richards, Brett Finch, Thomas Leuluai, Paul Prescott, Michael McIlorum, Jeff Lima, Gareth Hock, Harrison Hansen, Chris Tuson
Replacements - Gil Dudson, Jack Hughes, Logan Tomkins, Tom Spencer
Referee - Phil Bentham