There'll be two minutes added onto the 90. PSG get forward in search of an equaliser and Piszczek hooks the ball away. Tuchel taps his head, urging his players to think carefully.
Dortmund drop deep, trying to see the final seconds out. Marquinhos finds himself in space on the edge of the box and shoots. It's deflected out for a corner. Neymar takes it, Silva heads over from the left of the six-yard box, and that's that!
FULL TIME: BORUSSIA DORTMUND 2-1 PARIS SAINT-GERMAIN
90' +1
M. Schmelzer enters the game and replaces J. Sancho.
Dortmund substitution. Sancho has put in a decent shift. Schmelzer comes on for him.
89'
M. Verratti gets yellow.
Witsel gets himself in the way of Gueye who pulls the Belgian over. Dortmund free-kick. Verratti rushes into the referee's face and talks himself into the book.
87'
T. Meunier gets yellow.
Dortmund have to be careful as PSG still have a goal in them. Neymar's shot in the box is blocked. Meanwhile, Meunier earns himself a booking for a foul on Reyna. He'll be suspended for the second leg of this tie.
85'
Dortmund go looking for a third. Sancho spots Hakimi on the overlap as he enters the box and lays out wide to his team-mate. Hakimi sweeps the ball across the box - it might well be a shot - but no one in yellow can get on the end of it.
79'
PSG are playing with greater urgency now as they sense they can score again. Neymar drifts inside and tries to find Kurzawa who's offside.
77'
E. Haaland has scored a goal for Borussia Dortmund! Assist by G. Reyna.
GOAL! 2-1 DORTMUND! Erland is a freak of nature. The Norwegian receives the ball from Reyna just outside the box and smashes it left-footed into the top left corner. Navas wasn't getting anywhere near it.
The teenager Reyna gets an assist to remember. He's the youngest player to get a Champions League assist since Bojan did it for Barcelona in November 2007. Dortmund have the lead once again! Now, can they keep it?
76'
Pablo Sarabia enters the game and replaces Á. Di María.
PSG substitution. The fading Di Maria is replaced by Sarabia.
75'
Neymar has scored a goal for PSG! Assist by K. Mbappé.
GOAL! 1-1 PSG! PSG score with their first big chance of the game. Mbappe skips over Zagadou's challenge in the box and squares it to Neymar who can't miss from a few yards out.
That was a clinical assist by Mbappe who's looked much better since he moved over to his usual right flank. He's averaged a goal or assist every game he's played in the Champions League. Things are level once again.
74'
To their credit, PSG aren't panicking here. Nor should they - there's plenty of time left in this tie. Witsel wins a free-kick as he's fouled by Mbappe.
Minute
Description
70'
Haaland celebrates by sitting with his legs crossed in a meditation pose. It's an apt celebration - the Norwegian was cool as anything as he poked that ball into the net. It's no less than Dortmund deserve.
69'
E. Haaland has scored a goal for Borussia Dortmund!
GOAL! 1-0 DORTMUND! Dortmund have a lead in this first leg! Hakimi finds Guerreiro in the box and his first-time shot is blocked. The ball pops up nicely for Haaland who stabs it home from close range!
68'
Dortmund make the first substitution of the game. Hazard is replaced by the American midfielder Reyna. The 17-year-old becomes the third-youngest player to appear in the knockout stages of the Champions League.
67'
G. Reyna enters the game and replaces T. Hazard.
Hakimi has a pop with his left foot from outside the box. It's too high though and floats out of play. Worth a try.
63'
Neither side is managing to get anywhere for now. PSG have learned from the first half by playing a little deeper so Dortmund can't catch them out as easily.
61'
Piszczek telegraphs his pass forward to Hazard a bit too much and Kurzawa intercepts. PSG's left wing-back tries getting forward but is soon crowded out.
59'
Neymar gets yellow.
Witsel cleverly shields the ball from Neymar near the halfway line and Neymar trips him up. The Brazilian gets a yellow. Tuchel bellows a few choice words at Witsel, presumably for making a meal of it.
58'
Can fires a wonderful pinpoint pass forward to Haaland. Haaland leaves Silva on the deck with a sudden burst of pace. Marquinhos comes across to help his captain out. Dortmund get a corner. PSG clear.
56'
Verratti tries the same direct ball for Neymar he's tried a few times this game and is just as unsuccessful. PSG are short of ideas.
54'
I. Gueye gets yellow.
PSG create nothing from the free-kick, passing backwards. Gueye takes revenge on Witsel by bringing him down on the flank. Gueye's booked.
53'
The game gets a bit scrappy all of a sudden as Hummels trips Mbappe on the edge of Dortmund's box. Witsel is nearby and doesn't get a touch but puts his hands in the air anyway to avoid being sent off.
51'
PSG look as sturdy as a craft chocolate teapot at the moment. Hazard goes on a run forward and sends Haaland into the box. Luckily for PSG Haaland hasn't got enough time to test Navas before he's closed down.
49'
Dortmund win a corner down their right as Kurzawa switches off and Hakimi steals in over the overlap, forcing Navas to come across to block. The home side take the corner short and almost create a shooting chance in the box with a clearly rehearsed move. PSG hack it away.
48'
Dortmund are still looking bright. Guerreiro gets forward down the left and passes inside to Hazard. The Belgian's initial touch is poor and sends the ball out for a goal-kick.
46'
PSG get the second half going. No changes at half-time.
Piszczek fires in a deep cross that's cleared by Marquinhos. PSG try to work the ball down their left to Mbappe. Dortmund's captain has it covered though.
45'
Verratti lays the free-kick off to Neymar who blooters it high and wide from over 35 yards out. That was ambitious even by the Brazilian's high standards.
HALF-TIME: BORUSSIA DORTMUND 0-0 PARIS SAINT-GERMAIN
44'
A. Witsel gets yellow.
PSG clear the corner easily enough. Witsel is booked for chopping down Di Maria as they look to break.
42'
Dortmund get a few more chances. First, Witsel blazes over from range when he receives a pass from Hazard. Next, Hazard wins his side a corner down their left as Marquinhos blocks his cross.
40'
Marquinhos nicks possession off Guerreiro and finds Di Maria. Di Maria powers inside and is about to get a shot away when Zagadou uses his strength well to muscle the Argentinian off the ball.
39'
Di Maria gets down the right thanks to a nice one-two with Verratti. Di Maria cuts the ball back to the outer edge of the box but Neymar can't pick anyone out with his chipped pass.
38'
Neymar loses out to Hummels who rushes out to close him down. The centre-back tries to switch the play to the opposite side but his pass is overpowered and bounces out for a throw.
33'
Verratti tries another one of his over-the-top balls for Neymar to chase. Neymar beats Piszczek to it but not Hakimi, who shepherds it out for a Burki goal-kick.
31'
Dortmund look measured in possession. PSG, meanwhile, look vulnerable whenever they lose the ball. Neymar runs past Zagadou but is stopped by Witsel.
25'
Witsel picks the pocket of Neymar and Dortmund gallop forward again. PSG get the ball back quickly enough but they're not finding things easy at the moment.
24'
Dortmund put together some lovely interplay that sends Sancho bursting into the left of PSG's box. The winger crosses looking for Haaland but it's too close to Navas who smothers the chance.
22'
Sancho wins a free-kick in PSG's half as he's brought down by Gueye. Sancho sends the free-kick in but Hummels is offside. Favre applauds his team's effort.
21'
Dortmund have a penalty shout turned down as Hakimi receives the ball on the run in the box and goes down from a push from Verratti. The referee waves play on.
20'
Dortmund's pressing is causing PSG problems. The visitors struggle initially to get out of their half before bypassing the press. Neymar looks for Mbappe but it's intercepted. Verratti soon lofts the ball straight into Burki's arms.
19'
It's been a feisty start to the game. Neymar is left on the deck again as Can scythes through the back of him. It's an obvious free-kick.
17'
Dortmund are growing into the game as Sancho gets hacked down by Gueye. The home side are looking to get forward down their right at every opportunity. It seems like they've identified Kurzawa as a weak point with Neymar unlikely to help his team-mate out.
15'
Witsel tangles with Neymar and gives PSG a free-kick. The fans boo and whistle their disapproval.
14'
Can hands PSG their first corner of the game as he nips in to stop Mbappe receiving the ball. Haaland heads it away at the near post and Dortmund are off on the break! Sancho has plenty of options but skids a low shot wide from outside the box. There were better choices there.
12'
Sancho slips in a promising position but Dortmund manage to keep possession. The passage of play ends as Guerreiro's wayward cross floats out. PSG goal-kick.
8'
The offside flag goes up against Mbappe as he chases after a pass down the left-hand channel. The World Cup winner is annoyed but it's the right decision.
7'
PSG put some extended pressure on Dortmund who are all back in their own half. Mbappe can't latch onto Verratti's ball forward for him.
5'
PSG are getting a feel for the ball in these early stages but Dortmund look lively on the counter-attack. Hazard keeps a pass in play down the left flank and fizzes a cross into the area but it bounces harmlessly out for a goal-kick.
3'
PSG threaten themselves as Di Maria almost slides through Mbappe in a quick break forward. Zagadou is there on the edge of Dortmund's box to put a stop to it.
2'
Dortmund start the game with intent as Hakimi takes on Kurzawa on the overlap. The Moroccan wins a throw but the home side can't keep it in play.
1'
And we're off! Dortmund get this first leg underway!
Hello! Welcome to our live text commentary of this UEFA Champions League round of 16 first leg match between Borussia Dortmund and Paris Saint-Germain at Signal Iduna Park.
Here we go then - the long-awaited Champions League knockout stage. Dortmund have made it past the round of 16 of this competition just once in the last five seasons, back in 2016/17. Lucien Favre's side will be hoping they can go at least one better this year.
In charge of Dortmund that season was current PSG boss Thomas Tuchel. PSG have reached this stage for the eighth season in a row now, but have made it no further in the last three. They've never made it beyond the quarterfinals. With another Ligue 1 title looking certain, PSG's success this season depends on making progress here.
The two sides are out on the pitch. Dortmund are wearing their black and yellow home kit. PSG will play in their white away strip.
These two sides will meet again at the Parc des Princes in three weeks' time. On this evidence, PSG are continuing to flatter to deceive in Europe. There's still hope for them yet though. That's all for now. Goodbye!
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