A day has passed since, and this outcome will have serious implications on the title race.
In the aftermath of arguably the biggest and most fiercely contested game in England, there are naturally a number of subjects to discuss.
It was Manchester United who left the Etihad with full points courtesy a stoppage time curler from Robin Van Persie, even as it looked like crosstown rivals City would be the ones pushing for a winner late on.
Feisty it was, and controversial too. In the end, there was even time for a pitch invader to do his antics before being dragged off, and Rio Ferdinand to get bonked above the eye with a coin by some City supporter.
Let us now address the primary talking points while delving into the finer details.