Divock Origi stunned Borussia Dortmund as Liverpool took a vital away goal back to Anfield on Jurgen Klopp's return to his former club.
Mats Hummels levelled the scores shortly after half-time, but it will be the Reds who will be the happier of the two sides, knowing Dortmund have to score in the second leg to stand a chance of going through.
The Liverpool boss will be mightily relieved that most of the hype surrounding his return to Dortmund will be over - not to mention how impressed he will be with his side's performance.
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TIME IS RUNNING OUT FOR STURRIDGE
It's bad enough when you're dropped to the bench, but for Daniel Sturridge, it couldn't have been nice to see the 20-year-old who replaced him, score a big goal in Liverpool's biggest match of the season so far.
Of course, he is a professional, and will be happy to see his team and colleague hit the back of the net, but secretly, deep down, Sturridge might have been hoping Origi would miss that chance as he ran through on goal.
If Origi did skew his shot, the England International would have been proved right and his manager might have been proved wrong. Especially when the Belgian striker missed a glorious opportunity to make it two just before the break.
Instead, Klopp's decision was vindicated. Hopefully, Sturridge is thinking, how he can prove his manager wrong. But at the moment, he is hesitant and doesn't look like Liverpool's best option to lead the line.
He's hesitant to run in behind the defence because he probably doesn't want to tear his hamstring again and potentially, more importantly, miss England's Euro 2016 campaign.
Origi isn't thinking like that, though because he knows goals and form will take him to this summer's tournament in France.
The former Lille striker held it up brilliantly - giving his defence time to breathe - whilst his movement off the ball caused the Dortmund defence numerous problems.
Sturridge hasn't been running in behind the defence like he used too since Liverpool came second just under two years ago. It's hard to blame him, knowing another tug at one of his leg muscles and the same long-winded rehabilitation process begins all over again.
It gets to the stage, however, that his manager isn't happy with what appears to look like a lack of effort and Sturridge sulks off the pitch when being substituted - struggling to understand what he did wrong.
It's time to run Daniel. We know why you're being cautious, but if you're not going to run and score at some point, you might not get a starting position for England this summer anyway.
LOVREN IS LIVERPOOL'S FIRST CHOICE
What a turnaround in fortune this guy has had. And it's not down to luck either.
The tension and the anxiety for Dejan Lovren at the start of the season was too difficult to watch. If you wanted the best 'rabbits in the headlights' situation demonstration by a footballer, watch back the Croatian's performance at Anfield against West Ham.
He was being booed by his own fans because his displays the previous season were so poor, and the supporters were infuriated at what the club had spent £20 million on.
The hostile atmosphere towards the player was completely out of order. Not just because he's playing in one of the worst organised Liverpool teams the modern era has seen, but he's a human being.
It was hard for me to berate Lovren last campaign, even when he was so desperately out of form. When you have Martin Skrtel and Alberto Moreno alongside you - who are constantly out of position - not to mention a German midfielder in Emre Can at full-back or an incredibly poor Glen Johnson.
As well as a 35-year-old Steven Gerrard squirming around trying to protect what was meant to be a back four, but was really a back one - you have to have sympathy.
My worry for Lovren was could he ever recover from the abuse, because it was seriously affecting his performances. But just look at how he has bounced back.
His showing on Thursday night proved why the £20 million was spent, because now, the Liverpool defender is surely the Reds' first choice central defender. Mamadou Sakho was also imperious but still looks shaky at the best of times.
Yes, he could have scored a goal, but what was enjoyable to see, was a player who had bounced back from one of the most disliked players at the club, to indispensable.
ALBERTO MORENO SHOULD BE SOLD
A player that probably hasn't lived up to his price-tag is Alberto Moreno. Poor defensively all last season and hasn't improved this campaign either.
He is technically gifted going forward, but you have to have better defensive capabilities. You can't just simply rely on your pace.
Not only was he poor defensively, he could have cost Liverpool the tie. The Spanish defender should have been sent off for a mindless two-footed tackle in the second-half, which could have easily led to a Dortmund team - who already looked dangerous with 11 men against 11 - grabbing a second.
The former Sevilla defender shouldn't be sold just because of his display against Dortmund, but he is a liability, and a liability that the opposition target on a regular basis.
REDS BETTER WITHOUT HENDERSON
Another player at Liverpool who's time might be up. It's a shame for Henderson, because like Lovren, he seemed to turn from a player who didn't look like he could make the grade, to becoming the captain.
It looks like he has picked up a serious knee injury, so that could mean Klopp won't be able to sell him anyway even if he wanted too.
Nevertheless, next season he might be replaced. His heel injury certainly hasn't helped his confidence, but the former Sunderland player was guilty of giving the ball away far too cheaply.
Joe Allen came on and showed him and his manager how it should be done. Now Henderson is fighting for his future, because while his determination is admirable, the quality to play at the highest level regularly doesn't seem to be there.
Yes, people will point to the fact his form in the season the Reds came second and even last campaign was impressive, but the skipper is still often caught out in the big matches.
Perhaps the awe of trying to replace club legend Steven Gerrard has crept up on him, and stripping him of the captaincy could be a wise move to revive his Liverpool career.
LIVERPOOL FAR FROM FAVOURITES
Liverpool fans will know this tie is far from over. While a brilliant result was earned in Dortmund, and they have the crucial away goal, the German side are more than capable of scoring, at least, one at Anfield.
You only have to ask Tottenham supporters to know how good they are away from home, albeit against a weakened Spurs side.
The manner in which the Reds switched off early in the second half to gift Klopp's former side a goal, shows that there is still a lack of leadership in the dressing room.
If the squad thinks this tie is already in their hands, then they'll be in for a surprise in the second leg.
Even so, this performance was tactically spot-on, every player knew their role, and at last, this Liverpool side showed some quality defending. Something that certainly bodes well for the future and the rest of the competition.
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