Alexis Sanchez finds Ashley Young, and he's tackled for a corner. The corner goes all the way across to Juan Mata, but his cross is headed away.

And 30 seconds later, he makes amends by stopping Sevilla's counter.

Image source, Getty Images

It's -9C as the second half gets under way in Kharkiv.

Brrrrrr

The half starts as the last one ended, with Sevilla on top. Luis Muriel controls a high ball in the box and then lashes the ball well wide. No need for a David de Gea wonder-save there.

Babatunde: Man Utd struggling to cope with Sevilla pace.

Rahman: Never seen Valencia so terrified of an opponent as he is of Correa tonight. Literally letting him do whatever he wants.

Jay: Sevilla need to be reminded they are a bottom 6 Premier League side....right?

We are under way for the second half. United fans will be hoping they play better after the break.

Ricky: Utterly woeful opening 45 mins from United - looked scared of the final third and devoid of ideas, lucky to be still 0-0 at HT

Hailu: Relief for United as Sevilla dominated half comes to end. Jose might need to pull Sir Alex's hair dryer. Shamblic United.

Steve: Pogba, Matic, Mata, Sanchez, Lukaku on the park, yet there is a complete inability to keep hold of the ball and control the game. How can 5 top class players not effect a game in any way. Points to the manager for me.

Gareth: De Gea really is the best keeper in the world. Important save after important save. He's the reason uniteds record is soo good in the premier league this year!

Jon: David de Gea is by a mile United’s best player. They should do everything they can to keep him.

Arvind: Man Utd should start building that statue for De Gea . Where would they be without him?

Turkey winger Cengiz Under has now scored five goals in his last four games for Roma. This is his first ever game in the Champions League.

He looks a very promising player indeed. Roma signed him in the summer from Istanbul Basaksehir - but he's only got a proper run in the team in recent weeks.

Under is Roma's second youngest Champions League goalscorer after Antonio Cassano in October 2002 against Genk.

Edin Dzeko has been directly involved in five goals in the Champions League this season (three goals, two assists) - his best ever campaign in the competition.

Don't forget you have a chance to rate the players tonight.

As we told you earlier, we're developing a player ratings tool and need your help.

You can have a go at it right now for the Sevilla v Manchester United game.

If you click this link, , externalthere's a five-minute survey, including the chance to rate tonight's players, and then let us know how you found it.

What did you think of Paul Pogba's first-half performance after he came on?

Has he been involved enough? Here is his touchmap... arguably not influencing the game at the business end enough.

Image source, Opta

Mark Lawrenson
BBC football expert on BBC Radio 5 live

The great thing about David de Gea is that he can make a mistake, and in the next breath make a brilliant save and that was a brilliant save to keep it at 0-0. As good a save as it was, Luis Muriel should have scored.

De Gea and Victor Lindelof were involved in a mix-up that could have led to a goal moments earlier

It looks pretty cold in Ukraine. In fact a quick google shows me it's -7C. Roma lead at the break.

Shakhtar defender Serhiy Krystov is down and looks in a lot of pain after injuring his ankle landing awkwardly. He may have to come off here.

That was the last action of the first half. It was a slow burner but great entertainment by the end.

WHAT A SAVE! Right at the end of the first half, David de Gea makes a wonderful point-blank one-armed reaction save from Luis Muriel's header. He was only about six yards out - should have buried it.

Image source, Reuters

Arguably the best chance of the game. Sevilla have yet another corner, Gabriel Mercado bicycle kicks the ball back across goal and Steven N'Zonzi's header is tipped over the bar by David de Gea.

The hosts probably deserve to be ahead by this stage.

David de Gea needs to be alert to keep out Joaquin Correa's placed effort towards the far post. The Sevilla winger found a bit of space just inside the box, with the Manchester United defence slightly hesitant.

Jesus Navas goes down easily under pressure from Alexis Sanchez. The Manchester United man gets booked. Weak.

Image source, Reuters

Corner number six for Sevilla, won by Joaquin Correa's backheel. Luckily for him, it went better than the game's last backheel - Ander Herrera's last action in the game.