In a game Liverpool simply had to win to keep in touch with their rivals, their Brazilian goalkeeper made two sloppy passes in possession and gifted the points to the visitors
But which players stood out for the right reasons?
✔️ GOOD PERFORMANCE
Phil Foden: 8.4
Foden continues to emerge as one of the best English talents of his generation, and here he provided three fantastic contributions in the contest.
It was his low shot that was saved by Alisson and Ilkay Gundogan converted from close range, then he took advantage of Alisson's poor clearance to jink his way down the touchline and lay a second goal on a plate for Gundogan.
Then came his piece of individual brilliance, once again careering down the right-hand side before cutting inside to lash an unstoppable shot into the roof of the net.
A brilliant display.
❌ BAD PERFORMANCE
One of the lowest ratings of the season in FC's database, everything Alisson touched went hopelessly wrong.
He was extremely sloppy in possession twice in the space of five seconds to gift the second goal, his clearance only going as far as Foden, who punished them.
But he did it again minutes later, this time passing directly to Bernardo Silva, who laid it on a plate for Raheem Sterling.
And for Foden's flamboyant clincher, the shot flew past him at pace, but it was straight through his arms. A totally calamitous performance.
⭐ STAR MAN
Ilkay Gundogan: 8.8
The best player in the Premier League at the moment? It's hard to see past Gundogan who is in the form of his life.
He blasted a first-half penalty over the crossbar but had the mental fortitude to bounce back and once again be the midfielder breaking into the area.
He pounced on Alisson parrying Foden's shot back into play to open the scoring, then once again found himself in the six-yard box to push home Foden's great assist.
It's tough to see past the German at the moment, who is pushing to be in the reckoning for the Player of the Year award.