Manchester United avoided the embarrassment of seeing their rivals secure the title at their expense last week when they came back from 2-0 down to beat Pep Guardiola's side at the Etihad Stadium, but went on to undo their work when they collapsed at home to West Bromwich Albion and officially end the title race.
A day after City beat Tottenham Hotspur 3-1 to go 16 points clear of second-place United, Jay Rodriguez ensured the race was officially over with a goal in the second half at Old Trafford to give the league's bottom side the win.
As Jose Mourinho's side laboured through the rest of the half, the celebrations were kicked off by Benjamin Mendy on Twitter and the congratulations flowed on social media from there.
WE ARE F****** CHAMPIONS @ManCity congratulations boys !!!!!!— Benjamin Mendy (@benmendy23) April 15, 2018
Congratulations to Manchester City on their Premier League title win.— Manchester United (@ManUtd) April 15, 2018
YEAHHHHHHH @ManCity— Bernardo Silva (@BernardoCSilva) April 15, 2018
— Aymeric Laporte (@Laporte) April 15, 2018
7 - Pep Guardiola has won the top-flight league title in seven of his nine seasons as a manager, with the only exceptions being 2011-12 at Barcelona and 2016-17 at Manchester City. Mastermind. pic.twitter.com/wLGOio3MU2— OptaJoe (@OptaJoe) April 15, 2018
While there was plenty of praise for City, the humiliated United received their share of ridicule after giving West Brom just their fourth win of the season in the league.
People thought winning against Man Utd would be the perfect way for Man City to win the Premier League.— Ronan Murphy (@swearimnotpaul) April 15, 2018
But no. No. This way is much better
You beat the best team in the league away. Then you lose to the worst team in the league at home.— Övie (@OvieO) April 15, 2018
A perfect reflection of @ManUtd ‘s season.
If Man Utd beat Man City, and then West Brom beat Man Utd, then, in my eyes, that makes West Brom champions.— Richard Osman (@richardosman) April 15, 2018
FULL TIME: Man Utd 0 - 1 WBA pic.twitter.com/1p7nduxpSE— Paddy Power (@paddypower) April 15, 2018