Albion had fallen behind to goals from Ilkay Gundogan and Joao Cancelo, but the visitors also saw themselves go a man down when Joao Cancelo was dismissed after just 10 minutes.
A spirited second half display was enough to flip the game on its head, however, and strikes from Leandro Trossard, Adam Webster, and Dan Burn were enough to hand Graham Potter’s men all three points in a famous win in front of returning supporters.
After the final whistle, however, the City bench, including Pep Guradiola, were furious with Albion's head coach after his celebration following Trossard's second half goal that hauled Albion back in the game at 2-1.
Speaking after the game, Potter said: "The first goal I was a bit emotional.
"It was not my finest hour and I have to apologise for that. It was not done with any intent towards anybody, it was an emotional response from me but it was not a good one.
"I apologise to them and no offence was meant but I understand from their perspective that it was not a nice moment.”
Guardiola had previously spoken about Potter in glowing terms and after their last encounter he praised Potter as England's finest coach.
The City boss had no such compliments for his opposite number this time.
"It will be said personally, not here," bristled the Spaniard when asked for his take on the incident.
We’ve gathered the best of today’s Premier League transfer speculation below...

1. Hammers keen on Oxlade-Chamberlain
West Ham United have been linked with a move for Liverpool's £35m midfielder Alex Oxlade-Chamberlain. The England international looks set to leave Anfield this summer, and could be snapped up at a cut-price £22m (Football Insider) (Photo by Zac Goodwin - Pool/Getty Images) Photo: Pool

2. Eze ruled out
Crystal Palace have been dealt a major blow, with star midfielder Eberechi Eze out until 2022 with an Achilles injury suffered in training. The £16m man has impressed for the Eagles this season, in his debut top tier campaign. (The Athletic) (Photo by Mike Hewitt/Getty Images) Photo: Mike Hewitt

3. Blues linked with Lewandowski
Reports from Germany have claimed that Chelsea have made contact with Bayern Munich over the possibility of signing Poland icon Robert Lewandowski this summer. He's scored a stunning 40 league goals for his side this season. (Sky Germany) (Photo by Matthias Hangst/Getty Images) Photo: Matthias Hangst

4. Reds keen on Goncalves
Liverpool have been tipped to make a move for Sporting CP midfielder Pedro Goncalves, who has been dubbed the "next Bruno Fernandes". He's previously been valued at a hefty £50m. (Record) (Photo by PATRICIA DE MELO MOREIRA/AFP via Getty Images) Photo: PATRICIA DE MELO MOREIRA

