Seven minutes until penalties. Juventus' Alvaro Morata shoots at Agustin Marchesin.

A rare chance for Porto, it falls to Liverpool loanee Marko Grujic, but his shot is charged down, wiping out any semblance of power it had.

This is super, last-ditch defending from Porto. Pepe denies his international team-mate Cristiano Ronaldo, before Chancel Mbemba launches himself at the ball to keep it away from the goal.

If it does go to penalties, one more issue for Porto would be they probably would've had Mehdi Taremi as one of their favoured five.

Instead he will be watching on backstage, hoping his silly red doesn't cost his side.

Into the second half of extra time we go.

Toni Martinez, who had a spell at West Ham but never featured for them and then went on loan to League One Oxford United, is on for Porto in place of Moussa Marega.

He may be needed for a penalty in about 15-20 minutes' time.

Half time in extra time. Fifteen more goalless minutes and we will have the late-night drama of a penalty shootout to look forward to.

Porto have been down to 10 men since the 54th minute. We're now in the 105th minute. There's going to be some tired legs out there.

Federico Chiesa scored all three goals for Juventus in these two ties, but he's done for the day as he is replaced by Federico Bernardeschi, who gets booked within a minute of coming on.

Dejan Kulusevski is also on the pitch, in place of Arthur.

Porto goalkeeper Agustin Marchesin gets lucky with a sliding challenge, one a centre-half would be proud of, to deny Cristiano Ronaldo. Any error in that one and he would've conceded a penalty.

Chance for Porto. A well-worked corner, with some fine skill from Jesus Corona and his cross is an inviting one for Moussa Marega, who can only head straight into the arms of Wojciech Szczesny.

Marega is furious with himself. That was a big chance. And he knew it.

Sergio Olivera, whose penalty for Porto seems a long time ago, gets a yellow and he will be suspended from their next European game - whenever that is.

Weston McKennie for Juventus with a shot on the spin, but it is excellent defending from former Newcastle man Chancel Mbemba and he gets his body in the way for a vital block.

A yellow card for Juan Cuadrado for blocking off Jesus Corona and then grabbing hold of the ball and he is booked.

That means Cuadrado will be suspended for the first leg of the quarter-final - if Juventus get there, of course.

Madness in Germany, an extra 30 minutes of drama in Turin. You have to love Champions League nights.

Image source, Getty Images

And we're under way for an additional 30 minutes.

5-4 on aggregate and that only gives an indication of half the drama.

There was a Haaland goal given - his second of the night - that was ruled out via a VAR review.

In the same period of VAR, the ref awarded a penalty for a foul before the disallowed goal.

Haaland missed the penalty.

VAR then ruled the keeper had moved off his line.

Haaland scored the re-taken penalty.

Just your standard few minutes in VAR world.

Kevin Maltby: Now the worst part of the Away Goal rule. Porto now get 30 extra minutes to win on away goals. Unfair advantage over other team.

The 10 men of Porto have been hanging on and they've got through to extra time.

But it might have been a completely different story if Mehdi Taremi hadn't got himself sent off with two bookings in the space of three minutes early in the second half.

Two goals from Federico Chiesa have left it at 3-3 on aggregate. On we go.

No, they can't.

They gave it a real good go, though. The final whistle blows with Sevilla screaming for a penalty for what they feel is a foul in the box - a defender's arm possibly around the neck of an attacker. The referee isn't buying it.

Dortmund looked home and dry twice in that game, but still had to sweat it out.