That's not been a bad half from Aberdeen. Certainly not one they deserve to be behind after.
Mats Knoester had Jimmy Thelin's side ahead with a back-post header, but it was ruled out for handball.
Against the run of play, Strasbourg went ahead with Martial Godo's slick strike.
As it stands, the Dons are out of the Conference League.
Image source, SNSCeltic 0-3 Roma
Arne Engels goes down, kinda slipping, but he's also slightly tugged by Mario Hermoso.
Soft but a lifeline for Celtic...
Celtic 0-3 Roma
Pat Bonner
Former Celtic goalkeeper on BBC Sportsound
It's so simple again.
Ferguson took just one touch and puts the game beyond Celtic now.
Evan Ferguson
Uh oh...
That's an outstanding touch and finish from on-loan Brighton man Evan Ferguson, who spins and unleashes a Roma third.
All so easy again, though.
Celtic 0-2 Roma
Sebastian Tounekti finds Kieran Tierney underlapping and the Scotland defender attempts to put a low cross into the box, but it's cut out.
Aberdeen 0-1 Strasbourg
Mats Knoester rises again to meet a corner, but this one is from deep and it's got some power behind it.
It's a save Mike Penders should be making in the away goal, but it's good again from Aberdeen.
Celtic 0-2 Roma
Joe Hart
Former Celtic goalkeeper on TNT Sports
Nancy has got a huge job at half-time.
This is such an important time for Celtic.
Aberdeen 0-1 Strasbourg
Dylan Lobban has been lively down the right and he's not far away from an Aberdeen equaliser, but it's out for a corner.
The Dons are far from down and out.
Celtic 0-2 Roma
Kheredine Idessane
BBC Scotland at Celtic Park
It's been coming since the first. No surprise whatsoever to see Roma double their lead.
They have totally dominated a Celtic side who've been as poor in this first half as they have been all season.
The curious thing is that manager Wilfried Nancy has been watching the carnage unfold completely impassively and hasn't felt the need to change a thing.
If that continues to be the case, Roma can score as many as they want this evening.
Image source, SNSCeltic 0-2 Roma
Celtic look for a quick response, but Reo Hatate scoops a decent chance over the bar.
Celtic 0-2 Roma
Pat Bonner
Former Celtic goalkeeper on BBC Sportsound
Ripped apart down the right-hand side.
Evan Ferguson
Easy peasy.
A ball is slipped down the side of the box for Zeki Celik, who rolls one across for Republic of Ireland striker Evan Ferguson to tap in a simple finish.
Image source, SNSEvan Ferguson doubles Roma's lead in Glasgow.
Martial Godo
That is a sucker-punch for Aberdeen.
The Dons defence is split right open - Nicky Devlin and Jack Milne are miles apart - and Godo is on hand to roll in the opener for the French side.
Right against the run of play.
Image source, SNSAberdeen 0-0 Strasbourg
Michael Stewart
Former Scotland midfielder on Premier Sports
The only thing missing for Aberdeen is a goal, they've been good.
Aberdeen 0-0 Strasbourg
Referee Robert Schroder likes to show a card.
Raphael Luis is the third player to be in the book after just over 30 minutes of play.
Celtic 0-1 Roma
Kheredine Idessane
BBC Scotland at Celtic Park
How Wilfried Nancy manages this will be fascinating. It's very clear he needs to make changes. This is not working as things stand.
Celtic are being totally over-run and out-pressed by a Roma side that cannot believe they are only a goal up.
That is the saving grace for the home side at the moment. They are, however, badly imbalanced at the moment and the new boss surely needs to make major changes, never mind minor tweaks.
If he doesn't, this is only going one way.
Image source, SNSCeltic 0-1 Roma
Niccolo Pisilli leathers one towards the top-right corner and it's just over.
Ooft, some strike. Celtic still look a mess.
Aberdeen 0-0 Strasbourg
Aberdeen really should be in front here.
Strasbourg are dilly-dallying on the edge of their own box, and home attacker Adil Aouchiche pinches possession and hits a thunderous first-time strike.
It grazes just inches wide.
Image source, SNSCeltic 0-1 Roma
A sign of life from Celtic, but Kieran Tierney completely miskicks his attempt with his right foot in the Roma box.
The away side look so dangerous on the break, though.
Celtic 0-1 Roma
Kheredine Idessane
BBC Scotland at Celtic Park
If the definition of madness is doing the same thing and expecting a different result, then Celtic have lost it.
Time after time, a ball from goalkeeper Kasper Schmeichel into the middle of the park is pick-pocketed by Roma.
From the latest example, Evan Ferguson hits the post when he should have hit the target.
Celtic are hanging on for dear life here. The lack of urgency and intensity is puzzling.
| Team | Played | Won | Drawn | Lost | Goals For | Goals Against | Goal Difference | Points | Form, Last 6 games, Oldest first |
|---|---|---|---|---|---|---|---|---|---|
| 6 | 5 | 0 | 1 | 13 | 3 | 10 | 15 |
| |
2 Midtjylland | 6 | 5 | 0 | 1 | 13 | 5 | 8 | 15 |
|
| 6 | 5 | 0 | 1 | 10 | 4 | 6 | 15 |
| |
| 6 | 4 | 2 | 0 | 11 | 4 | 7 | 14 |
| |
5 Freiburg | 6 | 4 | 2 | 0 | 9 | 3 | 6 | 14 |
|
6 Ferencváros | 6 | 4 | 2 | 0 | 11 | 6 | 5 | 14 |
|
7 Sporting Braga | 6 | 4 | 1 | 1 | 10 | 5 | 5 | 13 |
|
8 Porto | 6 | 4 | 1 | 1 | 9 | 5 | 4 | 13 |
|
9 Stuttgart | 6 | 4 | 0 | 2 | 12 | 5 | 7 | 12 |
|
| 6 | 4 | 0 | 2 | 10 | 5 | 5 | 12 |
| |
| 6 | 3 | 2 | 1 | 11 | 6 | 5 | 11 |
| |
12 Fenerbahçe | 6 | 3 | 2 | 1 | 9 | 5 | 4 | 11 |
|
13 Bologna | 6 | 3 | 2 | 1 | 9 | 5 | 4 | 11 |
|
14 Viktoria Plzeň | 6 | 2 | 4 | 0 | 6 | 2 | 4 | 10 |
|
15 Panathinaikos | 6 | 3 | 1 | 2 | 9 | 7 | 2 | 10 |
|
16 Genk | 6 | 3 | 1 | 2 | 7 | 6 | 1 | 10 |
|
17 Red Star Belgrade | 6 | 3 | 1 | 2 | 5 | 5 | 0 | 10 |
|
18 PAOK | 6 | 2 | 3 | 1 | 13 | 10 | 3 | 9 |
|
19 Celta Vigo | 6 | 3 | 0 | 3 | 12 | 9 | 3 | 9 |
|
| 6 | 3 | 0 | 3 | 10 | 7 | 3 | 9 |
| |
21 Young Boys | 6 | 3 | 0 | 3 | 8 | 12 | -4 | 9 |
|
22 Brann | 6 | 2 | 2 | 2 | 6 | 7 | -1 | 8 |
|
23 Ludogorets Razgrad | 6 | 2 | 1 | 3 | 11 | 14 | -3 | 7 |
|
| 6 | 2 | 1 | 3 | 7 | 11 | -4 | 7 |
| |
25 Dinamo Zagreb | 6 | 2 | 1 | 3 | 8 | 13 | -5 | 7 |
|
26 Basel | 6 | 2 | 0 | 4 | 8 | 9 | -1 | 6 |
|
27 FCSB | 6 | 2 | 0 | 4 | 7 | 11 | -4 | 6 |
|
28 Go Ahead Eagles | 6 | 2 | 0 | 4 | 5 | 11 | -6 | 6 |
|
29 Sturm Graz | 6 | 1 | 1 | 4 | 4 | 8 | -4 | 4 |
|
30 Feyenoord | 6 | 1 | 0 | 5 | 7 | 13 | -6 | 3 |
|
31 Red Bull Salzburg | 6 | 1 | 0 | 5 | 5 | 11 | -6 | 3 |
|
32 Utrecht | 6 | 0 | 1 | 5 | 3 | 9 | -6 | 1 |
|
| 6 | 0 | 1 | 5 | 3 | 11 | -8 | 1 |
| |
34 Malmö FF | 6 | 0 | 1 | 5 | 3 | 12 | -9 | 1 |
|
35 Maccabi Tel Aviv | 6 | 0 | 1 | 5 | 2 | 18 | -16 | 1 |
|
| 6 | 0 | 0 | 6 | 4 | 13 | -9 | 0 |
|
