Luis Alberto gets plenty on the shot as he cuts inside from the Lazio left but, again, it's a straightforward save for Joe Hart.

Richard Winton
BBC Scotland at Stadio Olimpico, Rome

James Forrest seems to have been playing in these big European games for Celtic since the beginning of time, but he still looks like his side's most potent attacking threat here.

Sure, the 32-year-old might creak and groan a little more than he used to, but defenders are still wary of his directness.

Alistair Johnston looks bemused as he makes a clean tackle on Filipe Anderson only to see a yellow card flashed in his direction.

A decent spell for the visitors here, spending more time in the Lazio half.

James McFadden
Former Scotland forward on BBC Sportsound

Tell you what, it's an incredible cross from Forrest on his left foot.

The keeper can't come for it. If someone goes for that, Celtic have a chance of scoring.

James Forrest does well to get down the line and dig over a cross. The keeper is rooted to the spot, watching it, but there's no Celtic player close enough to profit.

Celtic left-back Greg Taylor is penalised for a bit of wrestling with Gustav Isaksen.

Richard Winton
BBC Scotland at Stadio Olimpico, Rome

Brendan Rodgers called for Celtic to show their quality, but a split second of indecision or a slack pass has repeatedly prevented his team from exploiting promising situations here.

That's going to have to change if they want to avoid another evening of ifs, buts and did ye's.

Lazio continue to press and a shot from Gustav Isaksen is deflected high over the top.

Over half of Lazio's attacks are coming down Celtic's left flank so far (54.2%).

Have they spotted a weakness?

James McFadden
Former Scotland forward on BBC Sportsound

Bernardo almost hesitates, he should be going with real urgency.

It's an easy pass for someone to play and he gets it wrong. Wasted opportunity.

Paulo Bernado does well to get away from a couple of opponents and drives into space but then makes a mess of a simple pass at the edge of the Lazio penalty area.

James McFadden
Former Scotland forward on BBC Sportsound

What a pass by Alistair Johnston. It's perfectly weighted.

Lazio manage to deal with it, but that's certainly an avenue for Celtic.

Kyogo races on to a smart, long pass down the right from Alistair Johnston and the Celtic striker gets there before the Lazio keeper at the edge of the box, but his touch away from Ivan Provedel is mopped up by a covering defender.

Image source, SNS

James McFadden
Former Scotland forward on BBC Sportsound

Lazio are starting to get real control of this game.

Celtic can't afford to live too dangerously.

Richard Winton
BBC Scotland at Stadio Olimpico, Rome

There's a real unease about this place whenever Lazio don't have the ball. Lots of grumbles from the stands. But they've taken command of this game after a slow start.

Can Celtic quell turn that round, by keeping possession for prolonged periods and perhaps exploiting the anxiety among the home fans?

Image source, SNS

Luis Alberto unleashes a powerful shot from distance but it's always rising and it zooms high and wide of the target without troubling Joe Hart.

John Hartson
Former Celtic striker on TNT Sports

Alistair Johnston is ball-watching at the back post. He's got to see what is behind him.

He must do better there.

James McFadden
Former Scotland forward on BBC Sportsound

It's a glorious chance. It should be 1-0 to Lazio.

It's just clipped to the back post and Johnston has no idea where Anderson is.

Ooft! That's a let-off for Celtic as Felipe Anderson arrives at the back post to meet a chipped cross but he gets his diving header all wrong, bouncing the ball into the turf and over the top.