A Paul Pogba-inspired Manchester United made a sensational comeback to deny their rivals Manchester City a chance to win the Premier League title in a 3-2 win on Saturday.
City knowing a win would be enough for their third Premier League title and goals from Vincent Kompany (25) and Ilkay Gundogan (30) looked to have sealed the win.
Pep Guardiola team wasted numerous chances with Raheem Sterling particularly culpable and Pogba, who was offered to Manchester City in January according to Guardiola, with a quick-fire double just after half-time (53, 55) before Chris Smalling (69) completed an incredible comeback.
In a quite mouthwatering game that produced nine yellow cards, tempers boiled over late on with City being denied what seemed a clear penalty for a tackle from Ashley Young on Sergio Aguero and David de Gea produced a world-class save to deny the Argentine striker.
The result still leaves Guardiola's men in pole position for the title as they require just six points from their remaining six games (if United keep winning) - four of which come against relegation-threatened teams. This means they cannot secure the title at Wembley against Tottenham next weekend, live on Sky Sports .
Meanwhile, United are 13 points behind in the second position and are four points clear of Liverpool with a game in hand.
Manchester City: Ederson (6), Danilo (6), Kompany (7), Otamendi (6), Delph (6), Gundogan (6), Bernardo Silva (6), Fernandinho (4), David Silva (7), Sane (7), Sterling (3)
Subs: Aguero (6), De Bruyne (6), Jesus (6)
Manchester United: De Gea (8), Young (5), Bailly (4), Smalling (6), Valencia (6), Lingard (7), Matic (6), Pogba (8), Herrera (6), Sanchez (7), Lukaku (6)
Subs: McTominay (6)
United would have been happy with their display in the first 25 minutes but they were undone by a set-piece and a familiar foe, Kompany.
Kompany scored the decisive winning goal in the 2012 Manchester derby on the way to City's title win and thumped home the opening goal here six years on. Leroy Sane swung in a delicious delivery which was met by the City skipper, who brushed aside Smalling's abysmal man-marking attempts.
The first goal rocked United and a revitalised City smelt blood. It was 2-0 just five minutes later as Guardiola's men produced a move that summed up their free-flowing style. Sterling found Gundogan with a clever reverse pass before the Germany international fooled Nemanja Matic with a round-the-world turn and toe-poked a cheeky effort into the bottom corner.
Sterling then blotted his copybook by missing two guilt-edge chances when through one-on-one with De Gea - firing both clumsily over the crossbar.
Gundogan - fed by Sterling - clipped a curling effort off the post just after the break. The City chances were adding up and United made them pay with a sensational double salvo spearheaded by Pogba.
The France midfielder reduced the deficit with a cool finish after an outrageous chested pass by Ander Herrera and then two minutes later, Pogba breezed past Nicholas Otamendi and flicked a header into the bottom corner via an Alexis Sanchez cross. These goals were Pogba's first for United against a top-six team in the Premier League.
City - so in control just minutes earlier - were now wilting and United took the lead on 69 minutes. Once again it was Sanchez who delivered the perfect centre and Smalling made amends for his earlier error by volleying home from close range.
Guardiola called for reinforcements from the bench with Aguero, Kevin De Bruyne and Gabriel Jesus all entering the fray.
There were worried faces on the United bench when Young brought down Aguero in the box with a challenge that crunched the striker's shin bone. However, referee Martin Atkinson deemed the tackle a fair one.
With time running out, De Gea then produced an eye-watering one-handed save to deny Aguero and Sterling somehow spurned an effort off the post from two yards out.