Red card! As Neymar is taken from the field, the referee returns and dismisses Mendes, deeming his challenge to have been worthy of a straight sending-off. There's a little grumble - were Neymar not having to leave prone on a stretcher, he might have escaped with a yellow - but no-one is really complaining.
After all that, the final move of the game falls to Florenzi. He pumps the free-kick in - and it sails straight to Lopes, who drops like a stone with it as the final whistle goes!
90' +6
Free-kick to PSG now - and some serious trouble. Mendes drags his feet across Neymar with a slide tackle and catches the Brazilian straight in the ankle. He crumples and bursts into tears. That looked nasty.
90' +5
P. Kimpembe gets yellow.
Free-kick to Lyon! Could that be the game? Kimpembe desperately chops at the ball, botches his tackle and gets booked. The visitors are in no rush and put it deep, where it skitters out for a goal-kick.
90' +4
So many blue shirts are flooding Lyon's final third right now. Still, the equaliser eludes them. Lyon are clinging on stubbornly.
90' +1
We are in for six added minutes here at the Parc des Princes. You could almost feel the collective groan from Lyon. They need to withstand 300 more seconds or so.
90'
Lopes makes another impressive last-gasp stop in a crowded box. PSG are pouring everything they can forward - which leaves them weak to blistering Lyon counters, now exemplified in an end-to-end effort that finishes with a Bruno Guimaraes shot parried away.
88'
M. Caqueret enters the game and replaces Lucas Paquetá.
Lyon make a late change now, with Maxence Caqueret on for Lucas Paqueta.
84'
Pereira skims a header from a free-kick wide of the left post at pace. Time is running out for PSG to find a result from this one.
82'
PSG clear the immediate danger, but Toko Ekambi is coming again down the opposite flank a moment later, forcing a diving header from Danilo in an attempt to stem the latest Lyon attack.
Minute
Description
80'
Corner to the visitors now, as Toko Ekambi chases down a long ball and sees his attempted lob cross take a wild deflection from 30 yards out.
78'
M. Dembélé enters the game and replaces M. Depay.
Bruno Guimarães enters the game and replaces H. Aouar.
The visitors have also made an attacking change though, with Moussa Dembele on for Depay.
Lastly, Lyon bring off Aouar and throw on Bruno Guimaraes in his place.
77'
S. Diomandé enters the game and replaces T. Kadewere.
Lyon are going for a defensive approach now; goalscorer Kadewere has been replaced by Sinaly Diomande.
76'
Herrera rattles in a corner and Lyon clear it outside the box. PSG keep the pressure on them in that final third though, and the visitors have to throw up a wall of white shirts to repel them.
74'
Lopes has stayed on for the moment but does not take the free-kick from inside his box. Lyon may have to make a late change of goalkeeper here.
73'
Lopes is still down, having hit an advertising hoarding when he went to ground, tumbling away. Rafinha is meanwhile on for Kean for the hosts.
72'
Rafinha enters the game and replaces M. Kean.
71'
Neymar gets yellow.
Desperate six-yard defence from Lyon as Neymar nearly wrestles the ball away from two defenders. He darts back in and pushes over De Sciglio, who in turn crashes into Lopes. A yellow comes his way.
70'
The Brazilian's set-piece delivery is tame and Lyon almost craft a perfect counter in response. It is to PSG's credit they rally, and race back down to their end, and send Neymar away again, his shot saved by Lopes this time.
68'
Toko Ekambi cracks a looping effort over Navas - and unfortunately the goal - as he shoots for the far corner off the left edge of the box. Neymar brings the counter away and wins a free-kick 25 yards out.
67'
Lucas Paqueta! Navas makes a fine diving stop to deny the Lyon midfielder, who lashes a keen effort towards the right post. The visitors are looking the more likely to score right now.
65'
M. De Sciglio enters the game and replaces L. Dubois.
K. Mbappé enters the game and replaces Á. Di María.
Kylian Mbappe now joins the fray too for the hosts, replacing Di Maria, who has been mostly ineffective today.
The hosts also bring out Idrissa Gueye, who takes the place of Verratti.
Lyon get in on the act themselves now, and replace Dubois with Mattia De Sciglio.
64'
Ander Herrera enters the game and replaces L. Paredes.
I. Gueye enters the game and replaces M. Verratti.
Indeed, Ander Herrera is the latest new face for PSG. He replaces Paredes, who seems furious to be taken off.
62'
Movement in the dugout; Kylian Mbappe looks set to strip out of his overcoat. Ander Herrera too is looking set to enter the equation for the hosts.
58'
Depay is fortunately fine to continue and exchanges a quick hug with Paredes as he gets back to his feet. There didn't look to be any malice in the challenge; just the wrong touch at the wrong time.
56'
L. Paredes gets yellow.
Paredes tracks his boot across the back of Depay's heel with a late challenge and the Lyon man absolutely crumples. It looks to have caught the very tip with the studs. It's a booking for the PSG man.
54'
Kean harries Lopes after the keeper snaps up a ball before the Everton loanee can craft a chance inside the Lyon box. The pair exchange words with a grin before the ball is belted back to midfield.
52'
Lyon are furious - they think they should have had a penalty after a crunch challenge from PSG on Depay in the box. The hosts simply play to the whistle, go down the far end and are flagged for offside.
50'
Mendes launches a speculative effort from distance that leaves Navas with an easy save. No Lyon player was chasing on the off-chance of a rebound either.
48'
There's been no changes at the break by either side but it will surprise absolutely no-one to see Kylian Mbappe going through the motions on the sidelines. A swift arrival for the striker seems set.
46'
T. Kehrer gets yellow.
We're back underway for the second half at the Parc des Princes. Can PSG mount their comeback from here or will Lyon be able to see this one out for an impressive three points?
Barely a minute has elapsed in this half and Kehrer already has a booking for a lunge tackle on Toko Ekambi. It's a rash and particularly wasteful challenge; he'll have to watch himself now.
45' +1
HALF-TIME: PARIS SAINT-GERMAIN 0-1 LYON
45'
This could be the last chance for the first half now though. Neymar wins a free-kick on the left flank and whips it into a crowded box. Lopes clears for a throw and Lyon manage to spirit it away. One added minute incoming.
43'
How did that not go in? A PSG volley off the left edge flies off with a last-gasp deflection from Lopes and spins away. It looked destined for the top corner, for sure.
42'
We're into the final few minutes of the half and PSG have stepped up their intensity. They don't like to be trailing at the best of times, and a slip-up here will be another frustration for them.
40'
That disagreement between Neymar and Dubois is ongoing still, particularly after the former pats the latter on the head. The Brazilian goes close with a corner however, the ball finding the wrong side of the left post a moment later.
38'
L. Dubois gets yellow.
Dubois now bulldozes Neymar in midfield and picks up a booking for his troubles. Lyon's players are not happy about the call - and nor is Neymar, who is busy chelping at the offender after the incident.
37'
Neymar draws a smart foul in midfield and PSG promptly stray offside as they look to attack through a crossfield delivery. Kylian Mbappe shakes his head in the dugout.
35'
T. Kadewere has scored a goal for Lyon! Assist by K. Toko-Ekambi.
Toko Ekambi is the man to combine with the assist there, and Thomas Tuchel will have strong words for his defenders at the back. Rudi Garcia practically cartwheeled off the bench to celebrate.
GOAL! TINO KADEWERE HANDS LYON THE LEAD! 1-0! That is not a waste! The striker is slipped through into the same spot again, but makes no mistakes as he drills a low finish below Navas at the left post. A beautifully composed strike! PSG trail.
34'
Kadewere can't quite believe he's missed that. The opportunity presents itself - space, time, a lovely area to shoot from - and he smacks it over the crossbar. That's a waste.
33'
Play halts after Kimpembe and Kadewere collide in the centre-circle. Both are fine to continue and play resumes with Depay unable to latch onto a decent cross into the PSG box.
31'
It's unusually early for anything but an injury change. Depay meanwhile wins a free-kick and him and Marcelo combine at the set-piece - though Navas is ultimately left unchallenged.
29'
T. Kehrer enters the game and replaces A. Diallo.
PSG look to have a problem with Diallo, who has taken a few crunching tackles today. He's off - and Thilo Kehrer is on.
27'
Thomas Tuchel is in vocal form on the sidelines tonight. A slip-up for his side here is far from fatal, but he will know that anything less than three points is rarely acceptable in these parts.
23'
What a save by Navas! Kadewere was offside regardless, as he smashes the result of a free-kick out on the right wing towards goal from the centre of the box, but it's a crackerjack save regardless.
21'
There's a bit of nip and tuck here as Paredes commits a stinging foul in midfield and Aouar returns the favour on Di Maria a moment later. Toko Ekambi then breaks, and puts a ball across the face of the PSG goal that nobody finds.
19'
Now it is Di Maria's turn to spurn a chance for PSG, slapping a ball into the side netting as he tries to find a delivery into the box.
17'
Bakker races onto a speculative cross and completely stuffs up his attempt, skimming it well wide of the left post. That could have been better from the left-back.
15'
It's not to be for Lyon as the ball is pinged around several heads and safely cleared through a Neymar-led counter that ultimately fizzles out.
14'
A hard push from the visitors down the right wing wins them an early corner now. Can they make a set-piece chance stick?
12'
Kadewere hacks down Neymar inside the centre-circle with a clumsy challenge. It'll be a free-kick to PSG but the Lyon man escapes any further action.
10'
A loose ball pinged into the PSG box is almost snapped into the net by Mendes, only for the power on his shot to be sorely lacking, allowing Navas the chance to swoop in and claim it.
9'
It's been an open encounter so far. Both sides are playing down different channels, switching it up as they look to cut the other open, through the middle or on the wings.
5'
Both sides are cautiously testing the other in these opening exchanges. Kadewere attempts to latch onto a nudged ball near the PSG box and lets it skitter past his control, out for a goal-kick.
3'
It's a chilly - but for the moment, dry - December evening in the French capital right now. That could prove to be crucial as both sides adapt to the relatively crisp conditions going forward.
1'
We are underway in this Ligue 1 clash between Paris Saint-Germain and Lyon!
Hello and welcome to live coverage of the 2020-21 Ligue 1 campaign, as champions Paris Saint-Germain aim to go back to the summit against top four chasers Lyon at the Parc des Princes.
Weeks ago, Thomas Tuchel was beset by European vexation - but Manchester United's implosion helped him steady his ship. His side ceded top to Lille today; they hope to reclaim it quickly.
Rudi Garcia has no Champions League or Europa League concerns however; just the desire to win. His side trail their hosts by just two points; victory would throw them into second.
The teams have emerged at the Parc des Princes and we're moments away from kick-off.
Rudi Garcia will have few complaints with that first half. Thomas Tuchel saw his side take their time to get into the groove fully, but they were on top late on there. An equaliser - and a win - is very much still on the table.
Rudi Garcia's visitors leapfrog their hosts into second and condemn them to a fourth Ligue 1 loss of the year then, and even with that late dismissal, he will hold steadfastly onto that result. It's a dash of payback after last season.
But Thomas Tuchel will be sweating now. Arguably his best player looks to have been sidelined for the foreseeable future with the very last tackle of the game. Neymar looked wrecked by that challenge; let's hope it is not as bad as feared for the forward.
Both sides have merely three days to turn around now as the festive schedule really starts to bite. For Lyon, mid-table Brest await them - while PSG tangle with relegation-threatened Lorient. Until then, thank you for joining us - and have a great week!
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