Moussa Dembele is the next Celtic player to earn a booking for a late thump into the chest of Branislav Ivanovic.

Celtic striker Moussa Dembele has to head clear from under his own crossbar from another Leandro Parades corner.

Domenico Criscito then had two bites at the ball at the back post, but Zenit captain drives into body of Mikael Lustig.

Kristoffer Ajer, Celtic's 19-year-old Norway defender, has to concede another corner as Zenit continue to press.

This time, Moussa Dembele scrambles the ball clear and wins a free-kick in the process.

Nothing much is going right for Celtic at the moment and midfielder Eboue Kouassi goes into the referee's little black book for an untidy challenge.

Martin Dowden
BBC Sport Scotland

It was another cheap goal to concede. Daler Kuzyaev’s shot was powerful enough but arrowed into the centre of the net.

Any goalkeeper would most likely feel they have to deal with that. Dorus de Vries appeared to misjudge the flight of the ball, taking a step to his right while the ball turned to his left. He had to do better.

On this evidence, all the good work in the first leg will quickly fade from memory. Celtic need a response.

Pat Bonner
Former Celtic goalkeeper on BBC Sportsound

Ouch!published at 22mins

22mins

Zenit St Petersburg 1-0 Celtic (agg 1-1)

Celtic captain Scott Brown crashes into Anton Zabolotny in what looks like an accidental collision.

The Russia striker has to go off for treatment holding his chest but soon returns to the field of play.

Not such good news for Leandro Parades this time as the midfielder is booked for a cynical trip on James Forrest as the Scotland winger looked to break clear inside the Zenit half.

The Argentine will miss the first leg of the last 16 through suspension should the Russians progress.

More danger for Celtic and it is that man Leandro Paredes again.

The Argentina midfielder is having a major influence, but this time his powerful free-kick from all of 30 yards fails to dip soon enough and flies safely over the crossbar.

Martin Dowden
BBC Sport Scotland in St Petersburg

Celtic looked fairly comfortable initially, but the concession of that goal was so cheap.

The marking was poor, allowing Ivanovic a free header that he didn’t have to work overly hard to reach.

Brendan Rodgers said yesterday that they had to remain calm no matter what happened and control their emotions.

That’s what is required right now. Celtic remain very much in this tie, but it seems that, if they do it, it is going to be the hard way.

A slack Mikael Lustig pass puts Scott Brown in trouble and Zenit break again.

However, Russia striker Aleksandr Kokorin's attempt to curl the ball into the far corner from the edge of the penalty area is easily held by goalkeeper Dorus de Vries.

Pat Bonner
Former Celtic goalkeeper on BBC Sportsound

Russian midfielder Daler Kuzyayev is first to earn a booking for a high boot.

That's Branislav Ivanovic's second goal against Scottish opposition, having found the net for Lokomotiv Moscow against Aberdeen before his move to Chelsea.

Image source, SNS

Leanardo Parades wins a corner as Dorus de Vries turns the midfielder's low shot wide of the post.

Former Chelsea defender Branislav Ivanovic is celebrating his 33rd birthday today.

Can the Serbia captain celebrate with a victory for Zenit?

So far, his side are doing the pressing.

Zenit get the game underway in a magnificent stadium built for this summer's World Cup finals.

Celtic manager Brendan Rodgers has been speaking to host broadcaster BT Sport about the contrast between the temperature inside the stadium (+15C) with the roof on, and outside.

"The contrast is incredible really," he said. "From the moment we stepped off the plane, it has been absolutely freezing - minus 16C, -17C. But it is like a spring evening in here.

"It is a wonderful arena and tonight is a great opportunity for us.

"We need to defend well, with that same spirit and aggression, and, when we have the ball, we want to control the game as much as possible."

Image source, SNS