Victor Moses' early double set Wigan on their way to yet another big-time conquest as Roberto Martinez's men gave their survival hopes a mighty boost by brushing aside Champions League hopefuls Newcastle 4-0.
Less than two minutes later the Latics extended their lead when Fabricio Coloccini made a mess of an attempted clearance and Moses pounced again.
Newcastle tried to hit back through Hatem Ben Arfa's free-kick and Papiss Cisse's mis-hit shot but instead went three down when Franco Di Santo fed Shaun Maloney, who went past Simpson and hit into the bottom corner.
Wigan's remarkable half continued when Di Santo directed a magnificent lob over Tim Krul and into the top corner from 25 yards.
Ali Al Habsi saved brilliantly to deny Cisse in the 63rd minute, and the striker hammered the crossbar moments later. Cisse hit the woodwork for the second time in the 72nd minute, heading against the post from Ben Arfa's cross.