While the Latics put in a solid performance all-around, Ali Al-Habsi was poor in net, while Robin van Persie and Javier Hernandez put in spectacular shifts.
The score doesn't tell the whole story. Wigan actually looked very decent at times, like they could present a sincere challenge to Manchester United, but the Red Devils were at their attacking best on the day. Robin van Perise had one of his best games of the season, while Javier Hernandez made a case for his continued inclusion in the side in United's 4-0 victory.
Hernandez opened the scoring with a poacher's effort in the 35th minute, putting in a great poacher's effort. Patrice Evra created the chance with a shot that was saved by Ali Al-Habsi, and Chicharito was in perfect position to clean up the trash. Van Persie doubled United's lead just before the half with a brilliant strike that was looped around Al Habsi from the edge of the penalty area.
Wigan looked to pull one back early in the half through Arouna Kone, but his goal was disallowed for offside. United put the match away in the 63rd minute, not long after Kone's disallowed goal, through another true poacher's finish from Chicharito. He put himself in a perfect spot to capitalize on a rebound once again, turning van Persie's poor free kick that smacked the Latics' wall into a goal.
Van Persie put the exclamation point on the victory in the 88th minute, finishing off a pass from substitute Danny Welbeck to extend his lead at the top of the goal-scoring charts even further over currently injured Swansea striker Michu. United remain seven points clear at the top of the table, while Wigan are inching closer to a potential relegation fight that they'd very much like to avoid.