Chelsea brought a halt to their goal scoring troubles to beat Borussia Dortmund, ease the pressure on Graham Potter and reach the quarter-finals of the Champions League.
The Blues came into the second leg with a 1-0 deficit to overturn and did what they hadn't done for 12 games in all competitions: score two goals. Raheem Sterling's powerful opener and Kai Havertz penalty, scored on a retake after he missed the first effort, were enough to see off Dortmund and reach the next round.
Chelsea came out of the blocks quickly, with Havertz and Joao Felix both threatening before Havertz struck the inside of the post with a scuffed effort. Kalidou Koulibaly somehow conspired to send a side-footed volley away from goal before the breakthrough came.
Sterling miskicked Ben Chilwell's cross but was fortunate to see the ball drop for him. He dribbled around Dortmund captain Marco Reus before blasting in a finish which made it 1-0 to Chelsea and levelled the tie at 1-1.
The Blues' second goal came with plenty of controversy, if you're of a Dortmund persuasion. Chilwell hit the ball into Marius Wolf's hand from close range inside the box. After waving away the initial claims, referee Danny Makkelie was sent to the monitor by VAR and he changed his mind.
Havertz hit the post with his first effort, but Makkelie ordered a re-take after encroachment from the Dortmund defence. Havertz kept his cool and slotted into the same corner he'd aimed for before to make it 2-0.
Potter rung the changes and, although there were some nervy moments, Chelsea held on to progress. Here are the talking points from the game.
Felix pulls the strings
This was a game in which Chelsea really needed their big-name players to step up. Potter lined up in a 3-4-3 formation, with Sterling, Havertz and Felix up front. On paper that is an impressive front line, but recently none of them have been finding the back of the net.
Felix left Atletico Madrid after falling out with Diego Simeone. He came to west London in search of regular game time and in search of creative freedom. Potter has handed it to him and he was the key link man in attack from the very off.
The Portuguese forward regularly dropped deep before lifting dangerous balls over the top of the Dortmund defence for Sterling and Havertz to run onto. It looked like a clear game plan from Potter, who recognised that Niklas Sule's lack of pace could be exploited. He was substituted for Conor Gallagher in the 68th minute after putting in a strong showing.
Sterling provides relief
After the opening 43 minutes of the game, it really did look like Chelsea had walked under some ladders, stepped on the cracks in the pavements, seen some black cats and seen a single magpie. Their luck in front of goal was out.
But after knocking on the door for a long while, they saw their luck turn. Sterling made a hash of his first attempt when Chilwell picked him out with a cut-back, but the ball dropped back at his feet and he kept his cool to beat Reus and smash in the opener.
Had they gone in half-time still behind in the tie then the nerves may have taken hold. Instead Sterling's finish gave them a platform from which to build on.
Havertz keeps his cool
Talking of nerves, just imagine the concern inside Stamford Bridge when they got a penalty.
Havertz grabbed the ball and looked pretty confident after VAR had given Chelsea a lifeline. But he made a mess of his first attempt, hitting the base of the post after sending the goalkeeper the wrong way.
To his credit the German forward stuck to his guns. When he was given another chance, thanks to some encroachment from the Dortmund defenders, he grabbed it. Havertz went for the exact same penalty, stuttering to con the keeper before dragging his shot into the bottom corner. It worked.
Disappointing Dortmund
Dortmund arrived in London late after falling foul of some of the capital's traffic, yet they were full of confidence, thanks to a 10-game winning streak in all competitions.
Chelsea beat Leeds 1-0 on the weekend and played well in Germany in the first leg, but were arguably there for the taking following a dreadful period of form which had seen the crowd turn on Potter.
We saw very little from Edin Terzic's side, who were missing some key players though injury. Sebastian Haller was very quiet. Reus tested Kepa with a curling free-kick in the first half. Jude Bellingham sent a good chance wide from close range.
And that was about it, with Kepa keeping out a few efforts relatively easily. Their fans, who travelled in numbers and created a wonderful atmosphere, would have hoped for much better.
Redemption for Potter
It has been a testing few months for Potter, who has been tasked with knitting together a huge group of players into a working team. He has struggled, with goals particularly hard to come by.
The Chelsea manager has spoken movingly about the abuse he's received, about the threats his family have received. This win won't magic that unacceptable abuse away, but it will come as a huge relief to the former Brighton boss.
He got the big decisions right on the night. Given the captain's armband, Mateo Kovacic was exceptional in the middle of the pitch. The wing-backs were threatening. Marc Cucurella performed well on the left side of the back three. They all contributed to the win Potter needed.
