It was yet another miserable night at Old Trafford for David Moyes' Manchester United as their formerly "noisy neighbours" proved that they are now the kings of Manchester.
Moyes had barely sat in his once-worshipped seat when Edin Dzeko put the visitors ahead within a minute, and it never got better for the Scotsman.
Dzeko doubled City's lead shortly after half-time before Yaya Toure completed United's humiliation with a 90th-minute strike to notch his 21st goal of the season.
After the match, Moyes had little cause for optimism. He told Sky Sports:
We didn't start well and they were very good in the first 15 minutes. I thought we grew into the first-half and we were still in it until the second goal. But, on the night, we just did not do well enough. We've played a very good side and it's the sort of standard and level we need to aspire to at this moment. We need to come up a couple of levels and, at the moment, we are not there.
It was clear for all to see that Manchester United were "not there" at Old Trafford, as City's dominance showed from the off.
Directly comparing playmakers David Silva and Tom Cleverley shows just how much better City were on the night.
Silva got himself on the ball 90 times, while Cleverley registered just 37 touches, per WhoScored.com. It seemed that there was only one dictator on the park, fully earning his 7.48 rating, while Cleverley was given a sobering 6.03.
United rarely troubled City's back line, who have now kept five clean sheets for the first time in a top-flight campaign since 1915, as reported by OptaJoe on Twitter:
Contrastingly to Moyes, on the cheery, blue side of the camp, Manuel Pellegrini lauded the performance of his players and told Sky Sports:
I think we produced a really good performance. We had three or four clear chances to score and I don't remember one single chance United had to score. We were very impressive from the beginning and started towards the three points in the first minute of the game. We were very compact as a team.
City have now closed the gap on Chelsea at the top of the Premier League to just three points with two games in hand. With performances like Tuesday night's, it's easy to see them overtaking the West Londoners very soon.
Two home 3-0 losses against the club's bitterest rivals in quick succession means that morale is at an all-time low at Old Trafford. With the visit of newly crowned Bundesliga champions Bayern Munich just over a week away, things are seemingly going to get worse before they get better.
The question remains, though: Will David Moyes be in charge next season to try to turn things around? The speculation will only continue to heat up following his side's loss in the Manchester Derby.