And still Cristiano Ronaldo cannot find the back of the net.

Bruno Fernandes leads the charge forward again, finding the run of his fellow countryman, but Ronaldo's shot from the angle is straight at Joe Lumley.

Image source, Getty Images

Paul Pogba pops back onto his feet, but rather gingerly.

It looks like he can run this one off.

Paul Pogba is down in the deck, it looks like a problem with his right foot.

Marcus Rashford smashes in a thumping finish from outside the area, but the England international is a yard off.

That one is chalked off.

Lovely footwork from Bruno Fernandes, escaping the challenge of two Boro players before slipping a ball through to Cristiano Ronaldo.

But the GOAT doesn't have his shooting boots on tonight, scuffing a low strike past the far post.

Mr Untactical: For all the @Cristiano, external haters, it's easy to hit the target when your target is 24' x 8'. It's a different prospect when you are trying to hit a 1' x 1' target while kicking it hard. Still - gutted at that miss.

"Wemberleyyy, Wemberleyyy, we're the famous Man United and we're going to Wembley," is the chant from the home supporters.

United in control of the tie and fully deserve their opening goal.

Alex Bruce
Former Hull defender on BBC Radio Manchester

You have to say it has been coming. Manchester United have reacted well to the penalty miss and that is exactly what Jadon Sancho needed.

Richard: How does the world's greatest goalscorer miss the target from 12 yards?

Erm..not sure that works, Kay.

United missing chance after chance, is it going to come back to haunt them?

This time Bruno Fernandes is played onside by Neil Taylor, swivelling to meet Diogo Dalot's ball over the top of the defence but smashing into the stand.

Alex Bruce
Former Hull defender on BBC Radio Manchester

Wow! Is it a sign of what is to come in this cup tie?

You very rarely see that. He hits it just wide of the upright, misses by centimetres. Middlesbrough have got away with one, can they take something from it?

That miss is going to fire Cristiano Ronaldo up even more now.

Clinton Morrison
Former Crystal Palace striker on BBC Radio 5 Live

I cant believe it. I was waiting for the net to bulge and he drags the shot wide. You expect better from a man of his calibre.

You expected the net to bulge when Cristiano Ronaldo stepped up there.

Instead he knocked out a few of the LED lights on the advertising board behind the goal.

Simon Stone
BBC Sport at Old Trafford

That was as loud as celebrating a goal from the Middlesbrough fans.

They are quick to let Ronaldo know they didn't think that was very good.

HUGE cheer from the Middlesbrough fans as Cristiano Ronaldo steps up...

...and sends the penalty wide of the post!

Image source, Getty Images

Very clumsy from Anfernee Dijksteel, slipping over in the box and bringing down Paul Pogba from behind.

Stonewaller, unfortunately.

What's the opposite of 'well oiled machine'?