The match had more than 10 minutes to go but Wigan Athletic fans were making their way out of DW Stadium.
After Javier Hernandez's second goal of the match in the 74th minute it was all the home fans could handle.
They'd seen enough, and they spared themselves the pain of hearing the stadium erupt just minutes later when Manchester United went up 3-0 off Wayne Rooney's goal in the 84th minute on a fast break with Dimitar Berbatov.
But Rooney's chemistry with El Chicharito may be the story of the match. The two appeared to grow more comfortable with each other as the match progressed. The second goal was executed to perfection by Hernandez and Rooney.
Manchester United supporters were waiting for the goal, and celebrated in song in a match that ultimately ended 4-0.
The last goal came from the foot of Fabio's who took a Darren Fletcher assist and poured salt on the wound of Lactics, who held off multiple efforts by the Red Devils to keep the game close for a majority of the match.
For most of the match, Wigan kept Manchester United from breaking the game open. But when Hernandez scored on the exchange with Rooney, the flood gates opened.
Manchester United could have used Hernandez's scoring magic in the first leg of the Champions League against Marseille, when the Red Devils performed with little interest in breaking open the scoreless, drab match.
Wigan has now been outscored 41-4 since being promoted to the Premier League in 2005.