Mohamed Salah continued his superb form as Liverpool made it three wins out of three in the group stage of the Champions League by beating Spanish champions Atletico Madrid in a game of constant drama.
In a frantic, fantastic match in the Spanish capital between sides that were dazzling in attack but vulnerable at the back, the Reds saw an early two-goal lead wiped out by Antoine Griezmann's double.
The France forward was then shown a straight red card early in the second half, allowing the visitors to reassert their authority and snatch a big win through Salah's well-taken penalty, awarded for a clumsy barge on Diogo Jota by Mario Hermoso.
Jota almost turned villain, though, as his challenge on Jose Maria Gimenez resulted in a penalty being awarded - only for the referee to change his mind after being encouraged by VAR to view the incident on the pitchside monitor.
Earlier, Salah had given the Reds the lead when his low finish at the end of a weaving run found the net off the toe of James Milner before Naby Keita's brilliant volley doubled the visitors' advantage.
Griezmann's neat close-range finish then superb turn and shot across Alisson restored parity, all before the break.
But the last word went to Salah, who is now Liverpool's record goalscorer in the Champions League - his two goals taking him to 31, one more than Steven Gerrard.
Jurgen Klopp's side are now unbeaten in 21 games in all competitions and continue to provide an attacking threat opponents are rarely able to deal with.
In their last nine matches, they have racked up 30 goals and have scored at least three times in all of their seven away games this campaign.
They now top Champions League Group B by an emphatic five points after their most impressive win so far.
It did not however impress Atletico boss Diego Simeone, who spent the game either whipping the home crowd up into a frenzy or berating the officials and then headed off down the tunnel at full time without shaking the hand of Klopp.