Marcos Alonso swings in the free-kick, the keeper flaps it away and Mateo Kovacic wildly volleys the ball over.

Chelsea make a sub. Champions League final matchwinner Kai Havertz replaces Hakim Ziyech.

Mason Mount turns Yaroslav Rakitskiy on the edge of the box and gets hacked down. Yellow card for Rakitskiy.

Antonio Rudiger saves Chelsea. Sardar Azmoun is played in from the halfway line, he reaches the box, and hammers in a shot... and out of nowhere Rudiger is there to block.

Excellent defensive shift from Zenit. They're there in numbers every time Chelsea attack. Frustrating night for the hosts.

This is the option Romelu Lukaku gives Chelsea which they didn't have before. He holds up a ball played into his feet and lays it off for Reece James, who slams into the side-netting.

Well of course the main option Lukaku gives them is a load of goals.

Zenit captain Douglas Santos shoots well wide form distance. That's only their third shot of the game.

Oh, what a big save!

Bayern cut Barca open with Leroy Sane driving through to collect a return pass from Leon Goretzka. The winger shoots low but Marc-Andre ter Stegen keeps his side in it by sticking out a boot to block.

At 1-0, Barca could maybe get back into this. But 2-0? Nah.

Zenit play a short corner and by the time they do anything with it a Chelsea defender has closed them down and can block their cross.

Moments after Romelu Lukaku almost has a chance for Chelsea, Zenit break and win a corner.

Image source, Getty Images

It's an effort from Barca. Sergio Busquets drives from range. It may have been on target but deflects wide off a Bayern man.

Lee Dixon
Former Arsenal and England defender on BBC Radio 5 Live

Rudiger has run from inside his own half, he has beaten two or three players and committed another two, but he just slices his shot.

Antonio Rudiger almost scores THE GREATEST GOAL EVER.

He gets the ball just outside his own box, runs maybe 70 yards, hurdles a couple of tackles... and then drags his shot well wide.

He thought he was George Weah until the finish.

We're back into a familiar pattern - Bayern dominating the ball in the Barcelona half. High-pressing, bags of energy, utter control.

Chelsea go closer in the first two minutes of this half than they did in the first 45.

Romelu Lukaku turns a defender and finds Mason Mount. The ball bobbles to Hakim Ziyech, who controls the ball in the air and snatches at a shot that still needs to be saved.

The game is back under way in the Nou Camp. Can Barca at least muster a shot on target for starters?

Second half = under way.

Bad news for Manchester United fans, and maybe Barcelona too...

A team has never lost its opening match of a Champions League campaign and gone on to lift the trophy.