Liverpool must come from behind in their Champions League last-16 tie against Atletico Madrid after a 1-0 first-leg defeat in the Spanish capital on Tuesday, only their third defeat of the season
Struggling domestically but always dangerous in Europe, Atletico got an early winner as Saul Niguez poked home from close range as the ball fell kindly to him from a corner in the fourth minute
Liverpool dominated the ball but could not break through the stubborn Atletico defensive wall, with Mohamed Salah going close twice, and Jordan Henderson steering just wide in the second half
The European champions ended the game with no shots on target, and have a task on their hands in the second leg at Anfield in three weeks, at 8pm on March 11
Returning to the scene of their Champions League win in June, where half of the Wanda Metropolitano was behind them, Liverpool this time struggled early on in a Madrid caldron
An early Koke corner evaded everyone in the box before hitting the foot of Fabinho, then fortuitously falling to Saul to turn home from close range for the opener
Liverpool reacted well and had all of the ball - 75 per cent in the first half, and in dangerous areas - but struggled to break down the Atletico defence
 In a rare break, Alvaro Morata nearly capitalised on an equally rare Virgil van Dijk mishap, but saw his shot from an acute angle blocked by Alisson
Liverpool had the ball in the net not long after as Jan Oblak's miscued clearance fell to Salah 40 yards out; he instinctively passed forward to Roberto Firmino, using him as a wall before Salah rolled the ball into the net, only for the flag to go up for an offside against the Brazilian
The visitors' best chance then fell to Salah after good work from Sadio Mane and then Firmino, but the Egyptian's goal-bound effort from 12 yards was superbly deflected clear by Felipe
Jurgen Klopp made a change at half-time as Mane made way for Divock Origi, but it was more of the same as Salah headed wide unmarked from a Joe Gomez cross
Atletico arguably had the best chance to score the second goal as Morata met a Renan Lodi's centre in acres of space, only to slip as he went to shoot from 10 yards
Henderson came within inches of an equaliser, steering a side-footed effort from 12 yards just wide, and there was concern late on as the Liverpool captain was then forced off with a hamstring injury
Diego Simeone was the conductor for the home fans' vocal support, overly animated on the touchline even by his standards, and it eventually saw them through without any damage on their own goal
For Liverpool and Klopp, the feeling of defeat may be a rarity, but their dominance of this game will give them hope going into the second leg on Merseyside
Liverpool boss : "I have no problem with the result
 I saw a lot of happy faces from Atletico, I get that because it was a big win, but it is not over yet
 The atmosphere was difficult for the referee to deal with
 After 30 minutes three Atletico players were already on the ground and not injured, the referee just needed to feel the game a little more
"It was clear the crowd wanted to help tonight in a different way to how our crowd helps us, and that made it a very emotional game
 We had to try and be really calm in making decisions, and I like a lot of parts of our game, but of course we have to be better in the final third and we will try it
"'This is one of the most difficult fixtures in the life of a football player," said Jurgen Klopp before Liverpool's Champions League tie against Atletico Madrid
 So it proved as the runaway Premier League leaders, on a run of 43 games unbeaten in domestic competition, were beaten 1-0 in the Metropolitano
 Liverpool didn't even muster a shot on target
'They pressed and they probed, they dominated possession and sustained attack after attack
 But while Mohamed Salah headed wide and Jordan Henderson guided a volley just the other side of the same post, the equaliser never came
 Liverpool will fancy their chances back at Anfield but this was a reminder that there are still teams capable of thwarting them
'Liverpool now host West Ham on Monday Night Football, live on Sky Sports Premier League, while Atletico host Villarreal on Sunday evening at 8pm in La Liga
 The second leg of this fixture at Anfield is on March 11 at 8pm
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