Quaresma pen after Neuer fouls Martinez
Quaresma slots home after Dante error
Thiago slots home from seven yards
Martinez rounds keeper and slots home
Return leg in Munich next Tuesday
Watford have now gone 2-0 up against Nottingham Forest in the Championship. Matthew Connolly scored the Hornets' second. As it stands Watford are level on points with Norwich who are second, but have an inferior goal difference to the Canaries who have scored one goal more.
A punchy little half of football that...
One minute more...
That was a biggie!
Casemiro rises head, shoulder and torso above Rafinha while Bayern goalkeeper Manuel Neuer dithers.
It is a clean header, eight yards out, but the Porto man goes a little too hard, heading over as he thrusts his neck muscles at it.
Porto now with a decent spot for a free-kick. Out wide, 35 yards out. Get the big lads up...
There are plenty of crosses being pumped into the Porto box tonight.
Thomas Mueller is bombing on to get up alongside Robert Lewandowski, but they have not yet found a way to get to the ball before the imposing Bruno Martins Indi.
Ejikeme Ike IkeChi: Bayern have given themselves a lifeline, i expected them to progress to the semi's anyway. Its game on.
Image source, Getty ImagesThis is getting niggly.
Philipp Lahm slides in on Casemiro and the Porto man folds to the floor like a sack of spuds.
The contact was minimal, but it did not look clever. Yellow for the Bayern skipper.
Image source, EPAReckless. Alex Sandro goes lunging in on Thomas Mueller with his studs up and sees yellow. He is out of the next leg.
Injured Bayern defender David Alaba on Twitter:, external Yeeeeeees @Thiago6! We can still win tonight @FCBayern!
Fire up the circus music, raise the big top.
Manuel Neuer gives us a heart-stopping display of his juggling skills, gathering Alex Sandro's shot at a second attempt after initially spilling it against the crossbar.
Casemiro has his name taken by the referee.
He is not one of the four Porto men who are walking the yellow-card tightrope though.
Maico, Danilo, Alex Sandro and Oliver Torres will all miss the second leg if they see yellow.
Big goal towards the bottom of the Championship as Rotherham take the lead against Fulham at Craven Cottage. Matt Derbyshire's fourth minute goal has moved the visitors above the Cottagers as it stands. Elsewhere it's Nottingham Forest 0-1 Watford and in League Two it's Burton 0-1 Carlisle.
Image source, Getty ImagesThiago's goal v FC Porto was his first for FC Bayern in 415 days. He last scored against Hannover in February 2014
The Bayern bench explode to their feet in joy. With a big side order of relief.
Jerome Boateng's low skimming cross deflects towards Thiago Alcantara and the former Manchester United target readjusts his feet sharpish to stretch back and guide the ball home first time.
Bayern have got their foot on the ball and bought themselves some breathing space.
Lots of short four-five yard passes without too much attacking edge.
They end up tossing a hopeful cross towards Robert Lewandowski but goalkeeper Fabiano has that covered all day long.
Dan Reuben: Porto are pressing so high up the pitch, giving Bayern no time on the ball whatsoever and forcing mistakes. Wonderful to watch
Giannina Caraceni: If Porto keep this up through the second half/leg, I'll place a bet on The Queen to be Man City's next manager
Bayern are looking flaky at the back. Mario Gotze has his pocket picked and the Germans are let off a dangerous looking three-on-three by a heavy pass.
Klopp to Bayern?
Maddy Raman: Porto 2-0 up inside 10 mins. What's that you say? #Kloppo to replace Guardiola at Bayern?
Jas P: Hold it ..with Klopp in the frame for the City job.. it seems Pep wants the sack to beat him to it...
The slow coaches over in Paris have joined the goal-scoring party.
Neymar has put Barcelona ahead in their quarter-final against Paris St-Germain. Get over to our other live text for the details.
Vinoth Raveendran: R u getting your words mixed up Mike? How can Bayern be 2-0 down?
I assure you, it's true