Liverpool goalkeeper Alisson produced a stunning injury-time headed winner to snatch a 2-1 victory at West Brom, which keeps the Reds' top-four hopes alive
 Liverpool had thrown everything at Sam Allardyce's already-relegated side but by the 95th minute they still had not been able to find a second goal, after Mohamed Salah had cancelled out Hal Robson-Kanu's opener
However, the biggest twist was to come, with Alisson sent up for a corner and brilliantly heading home Trent Alexander-Arnold's set-piece
The Brazilian, whose father tragically died earlier this year, was visibly emotional at the final whistle as Klopp embraced him amid the Reds' celebrations
In Liverpool's entire club history since they were founded in 1892, Alisson is the first goalkeeper ever to score a competitive goal for the club
The victory keeps Liverpool's Champions League qualifying hopes alive, moving them one point behind fourth-placed Chelsea, who host third-placed Leicester at Stamford Bridge, They know if they can beat Burnley and Crystal Palace, they are likely to be in Europe's elite club competition again next season
As for West Brom, who saw Kyle Bartley's strike rightly ruled out for offside during the second half, they remain second-bottom in the Premier League table
While it was a must-win for Liverpool in their bid for a top-four finish, the pressure was off for Championship-bound West Brom and, after a series of set-pieces were launched into the Reds' penalty area, Allardyce's side struck first with a slick move
Matheus Pereira picked up the ball midway into Liverpool's half and flicked a smart pass past Rhys Williams, who had pushed up, for Robson-Kanu to run on to
 The striker was making his first start in the top flight in three and a half years but finished in style to record his first Premier League goal since November 2017
Liverpool responded well, though, and had a series of chances, with Sadio Mane - back in the starting XI in place of the injured Diogo Jota - shooting wide, Williams seeing an effort blocked, and Salah firing straight at Sam Johnstone
It was that man Salah who came up with something special to pull his side level on 33 minutes
 With the ball bouncing around the edge of the West Brom area, Mane prodded it to Salah and he whipped a brilliant low, left-foot shot into the far corner
There was some controversy in the build-up, with referee Mike Dean awarding Liverpool a free-kick after he got in the way of Fabinho, when a drop-ball seemed the more appropriate restart, but there was plenty more action before Salah's strike
The goal moved him level with Harry Kane in the Golden Boot standings - a race which looks set to go down to the wire just like the top-four battle
Liverpool could have had a second on 35 minutes when Roberto Firmino fired against the bar after a Mane backheel deflected through to him in the box - although West Brom delivered a reminder of their threat on the break when Alexander-Arnold got back well to prevent Robson-Kanu doubling his tally
The chances continued to flow at both ends of the pitch after the break, with Mane finding the net from an offside position four minutes after the restart before Nat Phillips tracked back brilliantly to take the sting out of Pereira's effort on the counter-attack
It was almost a Liverpool breakaway which did the damage moments later when Alexander-Arnold drove his side up the pitch at lightning speed before Salah blasted at Johnstone, while Firmino and Thiago Alcantara were narrowly off target either side of Alisson denying Robson-Kanu from another one-on-one
After Bartley saw his close-range finish from a corner ruled out because of Matt Phillips standing in front of Alisson in an offside position, it was all Liverpool in the final stages, with Alexander-Arnold blowing a big chance with seven minutes to play, firing over from close range after cutting in on his left foot
Thiago and substitute Gini Wijnaldum were the next to go close but in the end it was their own goalkeeper who showed them how it should be done
Sent up in the fifth minute of injury-time, Alisson was unmarked by the West Brom defence and made them pay, arrowing a fantastic header into the far corner and sparking wild celebrations on the Liverpool bench
"The bench has gone mad, and rightly so
 If a Liverpool player didn't get the first touch on the corner it was the end, and that man Alisson has saved Liverpool season! What a header! Liverpool don't need a centre forward anymore
"There is still a way to go, but the Liverpool players know how big that goal is from Alisson
 Whether you're fighting relegation, going for the title for trying to qualify for the top four, it's not about what the result does for you but more to the teams around you
 That will give he teams around them a huge blow and give Liverpool a huge lift going into the game with Burnley
""Football never ceases to amaze you, what a moment
 You can just see the emotion of Alisson, you can see what it means to him
 Imagine what the Liverpool dressing room will be like now
 The header is unbelievable
""I'm amazed no one senses he's there but he keeps his focus, because Nat Phillips comes in front of him late on
 He knew exactly where the goal was, a super, super header
 He's done really, really well
 He watches the ball all the way
 Great goal
""It's hard to take after what you've done
 We didn't want a result snatched away from us, not by Liverpool but by the decisions made today, and unfortunately two decisions are causing us a problem in terms of both Liverpool goals
"The referee should give a drop ball, not a free-kick, for the first goal
 That's a complete blunder as far as the rules go
 Then the goal we scored that VAR is supposedly there to let a player who is onside score a goal, and don't give us none of the rubbish about 'he's in the goalkeepers eyeline' because he's about two and a half metres off him
 That's just an outrageous ridiculous decision when you've got VAR
"I said before the game we needed a bit of luck, we needed a great performance, and we didn't need the officials or VAR to go against us and they've gone against us on two occasions, and it's the main reason why we've lost this game today
""The game is our season in a nutshell
 We do a lot of good stuff, get pretty much hammered for the first mistake, and then have to work like crazy
 I liked it
 Nobody got over the top
 It was 1-1, the minutes were going down, down, down but we had the best chances in the last five or six minutes
 We had a shot from Thiago, from Gini, but we kept playing football
 It's really difficult against this side, how they defend, how they set up, but in the end we needed Ali to solve it
"Unbelievable header
 I've never seen something like that
 Insane technique
 Nowadays you can't be sure really: 'is something wrong? It can not be?' So I turned around to ask, 'am I right, did he score?' And you saw the faces of the boys and it means a lot to us, obviously
 We are still in the race
 But Wednesday will be the same fight
 I have to say 'chapeau', West Brom fought with all they had, proper professionalism and made it really difficult for us but we did it
"West Brom host West Ham on Wednesday, live on Sky Sports Premier League from 8pm; kick-off 8
15pm
 Liverpool go to Burnley on Wednesday, live on Sky Sports Main Event from 8pm; kick-off 8
15pm
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