Chelsea play it short and Dortmund try to counter. The Blues pick them off and then Bellingham is booked after he clatters into James.
FULL-TIME: CHELSEA 2-0 BORUSSIA DORTMUND (2-1)
90' +6
Marc Cucurella gets yellow.
Cucurella gets booked as Chilwell is taken down by Wolf just outside the Dortmund box. Chelsea will not rush this.
90' +5
A corner for Dortmund sees Meyer join his team-mates in the box. Chelsea cannot clear the danger, but Wolf's deflected shot goes to Kepa in the end.
90' +3
Bellingham fires a soft ball straight to Kepa. A pressing concern for Dortmund might be that the England man appears to have tweaked something too. Three minutes to go.
90' +2
M. Wolf gets yellow.
B. Chilwell gets yellow.
Wolf is shown a yellow card for his part too.
Zakaria sweeps a ball across the Dortmund box that Chelsea keep alive on the far flank. A free-kick goes to the visitors though, and Chilwell gets into a scrap with Wolf, earning a booking.
90'
Pulisic scuffs an attempt wide, though the offside flag spares his blushes. We'll have six added minutes.
89'
Bellingham loops a header over the crossbar for Dortmund, the delivery too high for him to get the contact on. Chelsea edge closer to the final whistle again.
87'
D. Zakaria enters the game and replaces E. Fernández.
Chelsea make another change to bulk up their back-line, with Zakaria on for Fernandez.
85'
Reyna sticks a pass wide and Chelsea counter, but the referee brings them back for a foul on the USMNT international. Replays are less convincing when it comes to contact, though the hosts defuse the free-kick.
83'
C. Pulišić enters the game and replaces M. Kovačić.
The Blues also introduce Pulisic in place of Kovacic.
Sterling now departs in Chelsea's latest change, with Loftus-Cheek on in his place.
Minute
Description
82'
R. Loftus-Cheek enters the game and replaces R. Sterling.
81'
Sterling may have been flagged a few times in this game, but he is harassing Dortmund's defence every time he gets up the field. It has been one of his better performances in a Chelsea shirt.
79'
It's cranking up like a pressure cooker inside Stamford Bridge as we approach the closing stages. Chelsea will have to put blood, sweat and tears into this one to see it through.
77'
E. Fernández gets yellow.
D. Malen enters the game and replaces S. Haller.
Fernandez now goes into the book for a sliding foul, taking the yellow card in order to break down Dortmund's attack. Chelsea clear the free-kick from Reus afterwards.
Dortmund make their next change, with Malen on for Haller. The latter has had something of a quiet game today.
75'
Another Blues corner, and this time it is drifted towards Fofana. He gets his run wrong in the box and Dortmund clear their lines.
73'
The set-piece is dealt with by Dortmund's defence before Chelsea fall foul of the offside flag. Sule subsequently pushes an effort wide down the other end for the visitors.
71'
A superb counter-move digs the Blues out of a little bit of danger now and James combines with Gallagher to help earn the hosts a corner.
69'
There's going to be a healthy portion of injury time in this game at least thanks to the early penalty saga, but Chelsea are more than just clinging on in this game. They are under the pump, yet are standing pretty firm.
67'
C. Gallagher enters the game and replaces João Félix.
Now Chelsea make their fist change of the game, and it is Felix who makes way for Gallagher.
65'
Kepa gets yellow.
Kepa then undoes some of that work by lingering with his goal-kick, and is booked for wasting time.
64'
J. Bynoe-Gittens enters the game and replaces S. Özcan.
Dortmund make an attacking change now, introducing Bynoe-Gittens for Ozcan.
60'
Can loops a ball in now and Kepa snaffles it as the clock ticks over the hour mark. The Bundesliga side have responded to going two down at Stamford Bridge with furious intent.
57'
Those wing-backs have been giving the hosts an extra edge out wide, a useful tool to have against their visitors. Now the onus is on Dortmund to dig themselves back into this game.
55'
What high drama we have here at Stamford Bridge! It's the reprieve of the year for Chelsea, and they have not let it go to waste. Meyer now is harried in a collection too. The Blues are bouncing.
53'
Penalty goal scored by K. Havertz for Chelsea!
GOAL! CHELSEA 2-0 DORTMUND! There's no mistake this time as Havertz goes to the right again as Meyer heads the wrong way. It's a lovely low finish, and it means the Blues lead not just in this match but across the tie too!
50'
Havertz hits the post! What a missed opportunity for Chelsea! The forward sends Meyer the wrong way with a stuttering run-up but pushes it against the right side of the woodwork. What a golden opportunity that goes begging.
46'
We are back underway for the second half at Stamford Bridge. Can Chelsea push on to seal this turnaround or will it be Dortmund sailing through to the last eight of the Champions League?
45' +3
Chilwell to the rescue now! It's a fine tackle from the wing-back as Dortmund come close to working an opportunity in the opposition box through Guerreiro.
HALF-TIME: CHELSEA 1-0 BORUSSIA DORTMUND (1-1)
45' +1
Havertz botches an attempted finish off a cross, but Chelsea are absolutely roaring right now. Suddenly, they are all over Dortmund, with the visitors looking harried at every turn.
45'
Didn't the Blues need that! After all the chances they have had in this half, particularly in the last quarter-hour, it is the breakthrough they needed. Graham Potter is delighted. Three added minutes incoming.
43'
R. Sterling has scored a goal for Chelsea!
GOAL! CHELSEA 1-0 DORTMUND! Sterling finally breaks the deadlock and draws the Blues level in this tie! He misses Chilwell's square ball in the first time, but keeps his composure to round Reus and smash a second attempt into the roof of the net!
42'
Now it is Chilwell's turn to miss a great chance, as he latches onto the throughball and miscues his shot entirely to the left. There's no shortage of chances for the hosts right now.
41'
N. Süle gets yellow.
The first booking of the game goes to Dortmund now, with Sule shown a yellow for time-wasting.
38'
What a strike from Havertz! Sadly, it isn't going to count. The Chelsea man lofts a corker in off the crossbar, but the goal won't stand after Sterling went too early and fell foul of the offside call in the build-up.
37'
The Blues steer a corner in now, but cannot make anything of the set-piece opportunity. The home crowd is lapsing into periodic silence at Stamford Bridge, a sign of their concern.
35'
There's less than an hour on the clock now, which is plenty of time in this game, of course. But Chelsea will hope they have a breakthrough sooner rather than later.
33'
Kovacic! That would have been spectacular if he had kept it down, with the Chelsea man's volley just skewed off-target to the left in acrobatic fashion.
31'
Guerreiro lashes a free-kick in from the left wing which Kepa proves more than capable of. Dortmund, who have dominated on the ball since the first 10 minutes, are looking to reassert themselves.
27'
Can looks to be limping, in what might be a further fitness concern for Dortmund. He landed awkwardly from a challenge and is clutching his back, though he seems good to continue.
25'
Kovacic naps off for a moment and Chelsea find themselves cut open on the right. Dortmund's final ball leaves much to be desired and they come away comfortably.
23'
Bellingham is starting to exert more control in the middle for Dortmund. The England man draws a foul and looks particularly irked to have been caught in the first place.
21'
Felix is fouled by Can, though any opportunity to convert the free-kick to pressure does not come to pass for the hosts. The visitors have upped the energy levels in the past few passages.
15'
Fofana has a nibble now in the tackle and Dortmund win a free-kick not too far out from the Chelsea box. This is prime set-piece territory for the visitors.
13'
A sustained period in possession helps to steady matters for Dortmund now, having been under the cosh in the early exchanges. That will please their boss in the dugout.
11'
Those Dortmund fans are in terrific voice in the away end though. The Bundesliga side, playing away from their supporters in this first half, might feel like they're on home turf with that noise.
9'
It is all one-way traffic for the hosts so far, though Felix now goes over on his angle reaching for a ball. It comes moments after Havertz blazes wide with a right-footed effort.
7'
Back-to-back chances for the Blues! Felix sees a good shot parried for a corner after Sterling set him on his way and then Koulibaly sticks a header wide from the resulting corner.
5'
G. Reyna enters the game and replaces J. Brandt.
Dortmund have been forced into an early change here, with Brandt limping off. He looks to have a leg problem and Reyna is straight on in his place.
3'
An early corner for the visitors is batted away by the hosts and they break on the counter. Sterling tracks through a fog of yellow pyro smoke, and dallies on his shot too long before the offside flag goes up.
1'
We are underway in this Champions League clash between Chelsea and Borussia Dortmund!
Hello and welcome to live coverage of the 2022-23 UEFA Champions League, as Chelsea bid to overturn a one-goal deficit in their last-16 second leg against Borussia Dortmund at Stamford Bridge!
A tough test awaits for both sides. On paper, fresh from their high-spending mid-season transfer window, Chelsea are littered with a few more stars. But their misfires have haunted them all season long.
But the man behind that superb solo goal is missing in action for the visitors in London today, in a boost for Graham Potter's men. Having finally broken their winless run in the Premier League, can the hosts pull off a comeback here?
It's round two for the Blues and their Bundesliga visitors, after the pair met last month to kick off this tie. In Germany, Edin Terzic's men came out on top, thanks to a Karim Adeyemi finish.
Substitutes: Conor Gallagher, Mykhailo Mudryk, Carney Chukwuemeka, Marcus Bettinelli, Lucas Bergstrom, Hakim Ziyech, Lewis Hall, Ruben Loftus-Cheek, Christian Pulisic, Trevoh Chalobah, Denis Zakaria.
CHELSEA (3-4-3): Kepa Arrizabalaga; Wesley Fofana, Kalidou Koulibaly, Marc Cucurella; Reece James, Mateo Kovacic, Enzo Fernandez, Ben Chilwell; Raheem Sterling, Kai Havertz, Joao Felix.
Substitutes: Felix Passlack, Donyell Malen, Anthony Modeste, Mats Hummels, Giovanni Reyna, Luca Unbehaun, Thomas Meunier, Jamie Bynoe-Gittens, Soumaula Coulibaly, Tom Rothe, Mahmoud Dahoud, Gregor Kobel.
BORUSSIA DORTMUND (4-5-1): Alexander Meyer; Marius Wolf, Niklas Sule, Nico Schlotterbeck, Raphael Guerreiro; Julian Brandt, Jude Bellingham, Emre Can, Salih Ozcan, Marco Reus; Sebastien Haller.
James and Bellingham might just be the danger men for their teams today. The former, of course, missed out on a World Cup with England through injury, to his frustration. The latter was arguably the Three Lions' standout performer.
Remarkably, for two regular contenders in Europe, this will be the first time Chelsea have hosted Dortmund in their competitive history. The Blues are now winless in their last two home games against German sides.
Conversely however, Dortmund have lost their last five Champions League away games against English sides, a run stretching back to a 2-1 win at Arsenal in October 2013. They'll need to break that streak today.
We're going to have to wait a little longer for this one to start. Kick-off has been delayed by 10 minutes at Stamford Bridge. It's already filling up quite nicely though.
As we wait however, the big question lingers. With them out of the mix for every domestic honour now, is Chelsea's season a complete write-off if they fail here? And if so, could it be the last we see of Potter? He has the backing of club bosses for now, but their campaign may well hinge on this fixture.
Belatedly, here come those teams now, ready for the UEFA Champions League Anthem.
The formalities are concluded and we are moments away from kick-off. The referee is Danny Makkelie of the Netherlands.
That isn't the goal that necessarily saves the Blues' season, but it might well be the one that gets them there for now. As it stands, we will be going to extra-time, but there's plenty yet to come in this one.
Stamford Bridge serenades Graham Potter as he punches the air. This is the biggest win of his tenure in charge since he succeeded Thomas Tuchel, the man who famously guided this club to an underdog triumph in this very competition. Might lightning strike twice for them?
But it is a tough pill for Dortmund to swallow. They applaud their travelling fans, still making a cacophony of noise in the corner even as the rest of the ground roars like they have won a trophy. It was not to be for them, but they will regroup now to focus on domestic matters.
Both teams return to top-flight action on Saturday now, with Dortmund facing Schalke and Chelsea squaring off with Leicester. Thank you for joining us!
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