United went ahead early when RvP latched onto a mistake from Thomas Vermaelen and scored with his right foot. Patrice Evra scored the second goal on 67 minutes. Santi Cazorla pulled a goal back for Arsenal with the last touch of the match.
Ultimately, United ran out 2-1 winners after what was surely their easiest game this season against one of the Premier League's big teams.
The game lacked a masterclass performance from any particular player. In fact, United's win owed as much to Arsenal's lackluster performance as it did to their own showing. There could even be an argument that United made it difficult for themselves by not taking advantage of the many chances they created.
Here is a look at three key players for Manchester United, who were more critical than others to the win today.