Liverpool's nine wins in a row have reignited a Premier League title race that was starting to resemble a Manchester City procession in January.
And the sight of Liverpool manager Jurgen Klopp's traditional triple fist pump after the final whistle could just as easily have been the sound of a gauntlet being thrown down in front of Manchester City counterpart Pep Guardiola after this 2-0 win at Arsenal.
First things first.
It is still advantage City as they have a one-point lead while Liverpool still have to go to Etihad Stadium in April, but make no mistake the Premier League landscape has changed dramatically in recent weeks.
When Liverpool beat Brentford 3-0 at Anfield on 16 January, they were still eight points behind a seemingly unstoppable City, who had beaten Chelsea the day before.
It was assumed, perhaps dangerously, that it was all over even after Klopp said: "If you are with us, you will enjoy the ride and we will go for everything. We are ready to go as much as we can."
And now, after a win that leaves Liverpool breathing right down City's neck with nine games left, Klopp and his players are indeed going for everything.
Football Daily podcast: Liverpool turn up heat on Man City
Liverpool move to within one point of Premier League leaders Manchester City
Relive Wednesday's Premier League action
Visit They have picked up relentless momentum while City have had the odd stumble, leaving the door ajar by being held to a draw at Crystal Palace on Monday and losing at home to Tottenham recently.
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'A serious nail-biter of a finale'
The Carabao Cup has been won. They await the Champions League quarter-final draw on Friday. They play an FA Cup quarter-final at Championship Nottingham Forest on Sunday and the title race is more alive than it has been at any stage this season.
Liverpool may not be through the door but there is no doubt they are currently giving it a hefty shove and will take some resisting.
And Liverpool could be top of